Browsers & Plugins
Web browsers are multipurpose Internet applications that include the ability to view websites as well as interact with other software and services.
Many browsers have come and gone over time. Most modern browsers offer improved security and functionality, yet each have their own weaknesses.
There are good reasons for choosing a particular browser. Learn more….
Use only browsers that are a currently maintained.
- Be sure to always update to the current version of all installed browsers. (Learn about software versions.)
- Uninstall obsolete browsers or those you don't use except where prevented by the operating system (e.g. Internet Explorer or Microsoft Edge or Safari).
Update Your Browser
Not sure what browser you're running? See What browser am I using?
Newer versions tend to be more secure, run faster and display current web content as it was intended. How to beef up your Chrome and Firefox security in 2019.
The Main Contenders
- Mozilla FireFox is a slim, standards-compliant browser that takes advantage of hardware acceleration. Strongly recommended.
- Firefox keeps your data safe. Never Sold.
- Windows, Linux, Macintosh are supported. Localized versions.
- Firefox overview | features | customization | keyboard shortcuts.
- Firefox Addons. Firefox Sync.
- Protect your privacy | Firefox Privacy | Data Collection.
- Extended Support Release provides longer-term support.
- Refresh Firefox | Troubleshooting Firefox.
- MozBackup backs up Mozilla profiles but is no longer developed.
- FireFox Mobile.
- Cliqz is a new Mozilla-based browser that is ultra-safe and ultra-fast.
- Apple Safari supports the latest Web standards.
- iPad, iPhone, iPod touch & Macintosh are supported.
- Safari extensions allow for new features to be added.
- Windows support ended on July 25, 2012 with version 5.1.7.
- Google Chrome combines a minimal design with sophisticated technology to make the web faster, safer, and easier.
- Google Chrome is available for Android and iOS.
- Microsoft Edge is optimized for Windows 10.
Internet Explorer: Do Not Use
Internet Explorer (IE) is more vulnerable than most browsers and has NOT been upgraded to support current web standards and therefore is no longer tested by most web designers.
While IE has been a part of Windows since Windows 95 and continues to be a part of Windows 10, it is no longer a suitable browser.
Is Internet Explorer (IE) a browser? According to Microsoft, no. Today, it's a 'compatibility solution' for enterprise customers to deal with legacy sites that should be updated for modern browsers. — ZDNet
Microsoft Internet Explorer 11 is available only for Windows 7, 8.1 or 10.
- Because it cannot be uninstalled, it MUST be maintained.
- IE's behaviour can be controlled by group policy (which is why it is common in corporate environments).
After January 12, 2016, only the most recent version of Internet Explorer available for a supported operating system will receive technical support and security updates. — IE Blog
Internet Explorer is a component of the Windows operating system and the most current version will continue to follow the specific lifecycle policy for the operating system for which it is installed. — IE Lifecycle FAQ
IE may be your only choice if you wish to play Pogo.com's legacy Java-based games because modern browsers no longer support Java.
Watch out for alternative browsers that enhance Internet Explorer and therefore inherit all IE's vulnerabilities.
- Opera is a slim yet full-featured browser.
- Vivaldi is fast, but also rich in functionality, highly flexible and puts the user first.
- Firefox Developer Edition is beta software tailored for web developers.
- Pale Moon is an Open Source web browser optimized for modern processors.
- Based upon Firefox/Mozilla code, with carefully selected features and optimizations to improve the browser's speed, resource use, stability and user experience. It aims to provide close adherence to official web standards and specifications.
- Pale Moon addons.
- Windows and Linux are supported.
- SeaMonkey is a community effort to deliver a production-quality browser suite.
- Windows, Mac OS X & Linux are supported.
- See SeaMonkey Download & Releases for known issues.
- SeaMonkey Addons for extra features and styles.
- Whereas the main focus of the Mozilla Foundation is on Mozilla Firefox and Mozilla Thunderbird, this group of dedicated volunteers works to ensure that you can have “everything but the kitchen sink” — and have it stable enough for corporate use.
- SRWare Iron — Chrome advantages without any privacy and security problems
- Maxthon5 serves you with a super surfing experience.
- Provides high-performance cloud backup, synchronization & sharing capabilities, and advanced encryption to ensure user data security.
- Windows PC, Mac, Android and iOS platforms are supported.
- Avant is a standalone application designed to expand services provided by Microsoft Internet Explorer.
Since it's based on Internet Explorer, Avant Browser is as secure as Internet Explorer.
- This means that Avant is subject to the same vulnerabilities as IE .
- Windows 2000/2003, Windows XP, Windows Vista or Windows 7 are supported (IE 6, 7, 8).
- iCab is a browser for the Mac. iCab FAQ.
- Lynx is a text-based web browser (no graphics) that predates the Web.
- evolt.org Browser Archive has many of the dozens of browsers that have come and gone over the years.
- Netscape Browser Archive.
- Browser Timelines shows the relative timeline of various key browsers.
These archives are useful primarily to researchers, web designers and others wishing to see how older browsers display current content. Installation of these browsers can corrupt Windows settings (such as earlier versions of Internet Explorer) or not work properly at all. They also lack any security improvements, so using them makes you much more vulnerable to malware and other hazards found on today's websites.
Extensions & Addons
Mozilla uses the term “add-ons” (referred to as “addons” on this site) to refer to three major forms of modifiers to Firefox:
- Extensions add new features to Firefox or modify existing ones.
- Appearance addons include complete themes which change how Firefox looks and background themes which only modify the title bar and tab strip with a background image.
- Plugins provide support and access to "helper" applications that are already installed on your computer.
Watch for Obsolete or Insecure Addons
Watch for Mozilla “permissions” warnings, particularly on older and potentially unmaintained addons. When clicked, the following text appears:
Some addons ask for permission to perform certain functions. Since you're in control of your Firefox, the choice to grant or deny these requests is yours.
Please note this add-on uses legacy technology, which gives it access to all browser functions and data without requesting your permission.
Installing these addons is risky. Uninstall them if they are currently present.
Apple Enhances Safari Privacy
The newest version of Apple's Safari browser will push back hard against the ad-tracking methods and device fingerprinting techniques that marketers and data brokers use to monitor web users as they browse. Starting with Facebook. — Wired
Apple noted that one of the methods of tracking are the identification of the extensions in Safari and plans to stop allowing such extensions so that all Safari profiles are similar, defeating such tracking techniques. Firefox users may want to consider that when choosing whether to include addons.
Watch out for obsolete and insecure addons and extensions. Like any software, these can become unsupported or may contain elements that spy on you or are otherwise insecure.
Extensions Complete on Their Own
Unlike plugins, extensions are complete on their own.
- Firefox extensions.
- Firefox now treats unsigned extensions with suspicion.
- See Mozilla's Find and install addons to add features to Firefox to learn more.
I add these basic Firefox extension to enhance the user experience on most installations (some are available for other browsers):
- HTTPS Everywhere is a Firefox, Chrome, and Opera extension that encrypts your communications with many major websites, making your browsing more secure.
- Ghostery or Privacy Badger privacy extensions.
- LastPass to replace the browser's potentially insecure password facility capability and to make it possible to share passwords with their other devices.
Firefox Privacy Extensions
[T]here is another reason websites track you — It's because you're worth a lot of money. Websites record your activity so they can sell your information to third party advertising platforms, essentially delivering ads that they hope are relevant to you. — ZoneAlarm Blog
In addition, there has been a huge increase in malware in online advertising and ads play havoc with expensive data plans on mobile and some ad networks have been used to spread ransomware.
ZoneAlarm's Adblocking in 2016 provides a balanced look at the issue.
Test Your Privacy
Panopticlick is an online test that analyzes how well your browser and extensions protect you against online tracking techniques, even if you are using privacy-protective software.
These extensions are designed to protect your privacy. Look at the 27 trackers found on the Forbes.com website (shown in a legacy version of Ghostery).
On the tools front, there are browser plug-ins such as Disconnect Private Browsing, Privacy Badger and Ghostery. Installing any one of these tends to administer a salutary shock, because they instantly reveal (and enable you to block) the startling number of snoopers who are covertly tracking your online activity. — The Guardian
- Ghostery lets you see who is tracking you online (including information on their privacy policies). It stops beacons, ads, analytics services, page widgets and other third-party page elements from secretly tracking your every move.
- Ghostery FAQs.
- Ghostery can also delete Flash and Silverlight cookies on exit.
- More recent versions of Ghostery use a simpler alert bubble than previous versions (shown on the right).
- Privacy Badger blocks spying ads and invisible trackers by enforcing the Do Not Track header (you have to have “Do Not Track” enabled in your browser) and may be a better alternative if you're uncomfortable with Ghostery.
- Mozilla's Do Not Track FAQ.
Passwords are unavoidable but present a risk to your privacy and security if not properly managed.
However, your browser's built-in password manager is not secure!
I liked LastPass because your sensitive data is encrypted locally before upload so even LastPass cannot get access to it. There are several options:
- LastPass, a free online password generator and manager, can be used on all your devices, for free! LastPass Premium is only US$12 per year and provides even more.
- A single installation on Windows, Mac, Linux and mobile devices can interact with all your installed browsers.
- Firefox LastPass Password Manager is a free secure online password manager which uses your LastPass account.
Addons for Web Developers
Web developers will want to check out my listing of useful Firefox extensions for web developers.
Plugins are addon software (helper applications) that enable your web browser to view and hear multimedia content. Unlike extensions, plugins are applications installed separately from your browser. Not all plugins are supported by all browsers.
Check Your Plugins
Out-of-date or misappropriated plugins leave you vulnerable. Check frequently for updates to installed plugins, removing obsolete or unused plugins.
Firefox has been expanding to support features that used to require extra plugins. Now, they're kept up-to-date automatically and managed through blocklisting for added security. — Mozilla
The Technology is Changing
While plugins were once the main method of adding functionality to browsers, they have extensive vulnerabilities and their reign is ending.
But as open standards like HTML5, WebGL and WebAssembly have matured over the past several years, most now provide many of the capabilities and functionalities that plugins pioneered and have become a viable alternative for content on the web. Today, most browser vendors are integrating capabilities once provided by plugins directly into browsers and deprecating plugins. — Adobe
Given that plugins tend to slow down your browsing experience, many of the plugins that were once considered mandatory like Flash and Java are now either no longer supported or disabled by default.
A sample audio control is shown below:
Source: Free Sounds (Public Domain)
Different browsers and mobile devices will display the controls differently.
The internet is full of websites that go beyond static pages, such as video, sound and games. NPAPI plugins, especially Flash, have helped enable these interactive pages. But they also make your browsing slower, less secure and more likely to crash. — Mozilla
Reader View Improves UX
Reader View improves the user experience by removing page clutter like background images, ads and other distracting content. Text is presented in a readable font size on a white background.
Most current browsers support reader view including Firefox, Safari, Opera, Chrome and Microsoft Edge.
HTML5 Safer and Accessible
HTML5-based technology is becoming widely used.
Unfortunately, big media companies have persuaded the W3C to incorporate DRM into HTML5, ensuring they can control what you watch and how you use it.
The commercial media industry is undergoing a major transition as content providers move away from proprietary web plug-in based delivery mechanisms (such as Flash or Silverlight), and replace them with unified plug-in free video players that are based on HTML5 specifications and commercial media encoding capabilities.
— Microsoft Edge Team [emphasis mine]
- Even further updates to 'Moving to a plugin free Web.'
- 10 things you didn't know your web browser could do yet.
- “Video for everybody” test page shows a live demonstration of video without Flash.
Learn more about how HTML5 is changing Web content and replacing plugins.
Vulnerabilities and exploits in plugins are a significant issue because they make our computers insecure.
Most current plugins have security issues that will be better addressed by newer technologies built into current and future browsers.
Adobe & Java Responsible for 66% of Vulnerabilities
It has been know for some time that Adobe Reader, Flash and Java are responsible the majority of vulnerabilities in Windows systems exploited by malware:
A long-term examination carried out by AV-TEST has proven that Adobe's Reader and Flash and all versions of Java are together responsible for a total of 66 percent of the vulnerabilities in Windows systems exploited by malware. Such weaknesses enable Trojans and other forms of malware to invade PC systems, in some cases in an unstoppable manner. — AV-TEST
- Why are Java's vulnerabilities one of the biggest security holes on your computer?
- Java is the biggest vulnerability for US computers.
Mac & Linux User Now Insecure
Windows users have long been insecure. By running Flash and Java, Mac and Linux users now share that vulnerability. Reports like the following from 2015 are typical:
The currently unpatched vulnerabilities reside in the Windows, Mac OS X, and Linux versions of the most recent versions of Flash and allow attackers to remotely execute malicious code. — Ars Technica
Unsafe Plugins Disabled By Default
Beginning in Firefox version 52, support for NPAPI plugins in Firefox has ended, except for Adobe Flash. Some of the plugins that will no longer load include Java, Microsoft Silverlight and Adobe Acrobat. — Mozilla Support
- Plugins based upon the obsolete NPAPI are disappearing. Chrome and Opera have already abandoned that standard, moving to PPAPI.
- Firefox no longer loads NPAPI plugins except for Adobe Flash.
- Microsoft Edge and Cliqz have removed support for plugins altogether.
- Addons Blocked by Mozilla.
I recommend that you uninstall these vulnerable plugins:
- Adobe Reader.
- Flash where not needed.
- Shockwave Player.
- Java where not needed.
- QuickTime for Windows.
If you need it only for a single activity, such as running Java for Pogo games or Flash for certain critical site, why not download a different browser so that your main browser is protected from vulnerabilities during regular surfing?
I strongly advise against using Internet Explorer but it may be your only remaining option if you wish to play Pogo's Java-based games as the other browsers no longer support Java. Newer HTML5-based games don't require plugins.
PDF is a format invented by Adobe that allows files to be viewed anywhere with the proper fonts regardless of the software it was created with.
Firefox & Other Browsers will Display PDFs
Most modern browsers will display PDF documents natively without plugins.
- Firefox displays PDFs but some features like auto-fill may not work.
- Google Chrome and Microsoft Edge support these features natively but there are privacy concerns.
A dedicated PDF reader has extra features that may not be available in browsers.
Nitro Reader — Gone
Nitro Reader, my previous recommendation, is no longer available.
There is no free version of Nitro Pro and we have discontinued Nitro Reader. — Nitro Community Forum
Professional PDF Software Recommendations
I recommend Nitro Pro or Able2Extract Pro for users that need professional quality software:
- Able2Extract Professional (free to try; US$149.95 to buy) is a powerful professional PDF program that allows you to do almost anything with PDFs. Available for Windows, Mac and Linux. Learn more.
- Nitro Pro (free to try; US$199.99 to buy) allows you to create professional quality PDF documents that anyone can view, with any PDF reader, on virtually any device. Supports Windows only. Learn more.
Other PDF Alternatives
There are other PDF alternatives:
- Foxit Reader is probably the best known of the free alternatives but also needs patching.
- Sumatra PDF is a free PDF, eBook (ePub, Mobi), XPS, DjVu, CHM, Comic Book (CBZ and CBR) reader for Windows.
Adobe Reader NOT Recommended
The long-term examination carried out by AV-TEST…clearly shows that Adobe Reader, Adobe Flash and Java are together responsible for two thirds of the vulnerabilities in Windows systems exploited by malware. Users who rarely update their software and use insufficient security software have virtually no chance when faced with specially prepared malware. — AV-TEST
- If Adobe Acrobat Reader is installed, be sure to update it regularly.
- Many computers have obsolete (unsafe) versions installed.
- Any version of Adobe Reader prior to the current version of Adobe Acrobat Reader DC is obsolete.
Adobe Acrobat Reader DC focuses on access to documents from anywhere using Adobe Cloud (subscription required). It has a flat look more suitable for touch systems and mobile:
- Install updates for Acrobat and Reader. Version numbers begin with the release year (e.g. 2018.011.20040).
- Adobe Acrobat Reader DC FAQ. System Requirements. Online help.
- Transforming Adobe's PDF Lineup on Adobe's blog.
- Get to know the new Adobe Acrobat DC interface (video).
Adobe Flash Player
Adobe Flash was the standard in creating animated clips and videos in the early days of the web. Back in the good 'ol days, it was a fan favorite for developers and designers alike, as it was very functional and easy to use. But as technology progressed, Flash did not. This made it a prime target for hackers who saw Flash as an easy entry point. — ZoneAlarm
There are issues with Flash Player:
- Flash makes your computer more vulnerable to being infected and must be updated frequently to stay ahead of newly-discovered vulnerabilities.
- Flash is a 32-bit plug-in which slows down modern 64-bit operating systems and won't work in 64-bit browsers.
- It consumes a lot of energy and performs poorly, especially on mobile devices.
[Adobe] will stop updating and distributing the Flash Player at the end of 2020 and encourage content creators to migrate any existing Flash content to these new open formats. — Adobe Blog
Uninstall Flash if Not Needed
Unless you frequent Flash-based sites, I recommend that you uninstall flash. If installed, be sure to update it regularly.
Many sites use Flash ONLY for advertising or tracking purposes. Enabling Flash invades your privacy without giving you anything of value in return.
HTML5-based technology just works better than Flash and is safer.
Downloading & Updating Flash
- Download Adobe Flash Player | Test your Flash installation.
- Before downloading Flash uncheck any optional downloads like McAfee Security Scan Plus or Google Chrome.
There are three different Flash installers for Windows, each supported by the indicated browsers. The difference in the installer name is in bold (the version number will change as Flash is updated):
- ActiveX (Internet Explorer: installation not recommended):
- NPAPI (Firefox — no longer supported by Chrome and Opera):
- PPAPI (Chrome and Opera):
NPAPI Plugins Unsafe
NPAPI-based Flash plugins make Windows insecure (see US-CERT Alert TA15-195A).
- NPAPI Flash plugins are now blocked by Firefox.
- Flash support will be completely removed from Firefox in early 2020.
- NPAPI Flash plugins are no longer supported in Chrome or Opera.
- Flash can be turned off via the settings in Microsoft Edge.
Verifying Flash Version in Windows
Windows users can verify the Flash version for each type of installation by opening the Flash Player Settings Manager in Control Panel and selecting the Updates tab.
You should uninstall Shockwave Player.
- Shockwave Player is obsolete, vulnerable and contains obsolete Flash components.
- The recommendation is to update it regularly yet the March 2017 security update was the first since October 2015 (Flash has had over 15 updates since then).
Download Shockwave or Test Your Installation
I advise against installing Shockwave Player, but you should maintain it if you do.
Microsoft Silverlight Animation & Video
Download Silverlight, a free plug-in, powered by the .NET framework. Windows and Mac (Intel only) platforms are supported.
Probably Unnecessary for Netflix
NetFlix works without Silverlight on newer browsers (it may be required when using older browsers). Check the Netflix system requirements for HTML5 Player.
Java Support Ending
Public updates for Oracle Java SE 8 will remain available for individual, personal use through at least the end of 2020. Public updates for Oracle Java SE 8 released after January 2019 will not be available for business, commercial or production use without a commercial license. — Oracle
Java Makes Your Computer Vulnerable
It has been known for some time that Java makes your computer vulnerable.
Oracle has released a massive Critical Patch Update (CPU) for July , addressing 334 security vulnerabilities covering a vast swathe of its enterprise portfolio. Of the 334 vulnerabilities covered this month, 61 are rated critical, with a CVSS rating between nine and 10. — ThreatPost
Remove Java if you don't need it (most people don't). LibreOffice & OpenOffice may require Java only for extended functionality. My system hadn't used Java for over 6 months when I uninstalled it (LibreOffice was installed and used during this time without requiring Java).
By uninstalling Java you can determine if it is really necessary. It can be quickly reinstalled if you really do need it.
Java Gaming Sites
- Oracle lists some suggestions for fixing Java issues in Pogo but contains broken links.
- See EA's Java guide for Pogo game issues for helps specific to Pogo.
- System Requirements to play Pogo Games may help you troubleshoot issues.
- EA's documentation on Java and Flash support in browsers.
Future Browser Support Deprecated
Oracle has deprecated all support for browser plugins starting with version 9 (released in September 2017).
For help, see Oracle's How do I enable Java in my web browser?
Browsers that Support Java
Version 8 is the last Java version with browser support, mostly because browsers removed Java support across the board except for Internet Explorer (generally unsafe to use) for Windows users and Safari for Mac users.
Java Support Ended for Browsers
- Firefox 52 and later no longer support most NPAPI plugins, including Java.
- Legacy versions of Firefox (unsafe to use) disabled Java. Update to the current release or uninstall Firefox from your system.
- Firefox ESR up to ESR 52 may support Java but it is no longer available, replaced with the ESR 60 and later series.
- Google Chrome no longer supports NPAPI plugins, including Java.
- Internet Explorer supports Java, but is riskier because of its integration with Windows and lack of recent development.
Download Java or Test Your Installation
More about Java installation and security.
VLC Player, a free and open source cross-platform multimedia player and framework, plays almost all multimedia files as well as DVD, Audio CD, VCD, and various streaming protocols.
New versions of Windows since 2009 have included support for the key media formats, such as H.264 and AAC, that QuickTime 7 enabled. All current Windows web browsers support video without the need for browser plug-ins. — Apple Support
Uninstall QuickTime for Windows
QuickTime 7 for Windows is no longer supported by Apple and contains dangerous vulnerabilities. It should be uninstalled.
QuickTime for Mac
QuickTime is supported for macOS and iOS. Update to the latest version or uninstall it.
If you're using Quicktime Pro, save your registration key before uninstalling it.
You should uninstall RealPlayer. RealPlayer plugin is unsafe.
RealPlayer plugin has been flagged as unsafe by Firefox and Chrome. The plugin has been replaced with a cloud-based service.
If you're having trouble viewing content properly or if your browser stops working, the resources in this section can help you to recover.
If you can't see any content, check to see if the issue is with a specific website or if your connection to the Internet is broken.
Can't See New Content?
Sometimes you'll have problems viewing what you expect on a webpage. Either updated content isn't showing or something is displaying incorrectly.
This is usually because the browser is displaying cached (locally-stored) content rather than refreshing the content from the website. Browsers use caches to avoid having to repeatedly download similar content from the Web such as style sheets, graphics, etc.
If reloading the page doesn't work try clearing the cache or a hard reset (forced refresh).
Backup and Recover Mozilla Profiles
Like many other settings, Mozilla content can become corrupted or you could lose it in a computer crash.
MozBackup is a freeware program which allows you to create backups of Firefox profiles (bookmarks, settings) as well as Thunderbird profiles (mail, contacts, account settings).
- Download MozBackup from JasnaPaka.com.
Unfortunately, MozBackup is no longer developed and the developer has indicated there are problems with the program. One issue is transferring 32-bit content to a 64-bit installation.
Mozilla has documentation on how to backup, restore and recover data in Firefox profiles:
Refresh Firefox can reset Firefox to fix slowness, crashing, etc.
Disable Annoying Video Autoplay
You land on a site and all of a sudden a video is playing. You're annoyed for many reasons including
- clicking on the pause button distracts you from the reason you went to the site in the first place;
- these unwanted videos waste your bandwidth (especially when using expensive cellular data); and
- videos can be disruptive late at night or in your work environment if your sound isn't turned down or off.
You can stop Flash from running simply by disabling it (there are built-in settings in most browsers), but HTML5-based video is newer and unaffected by Flash settings. Recent versions of Firefox either disable autoplay or mute the sound.
- Older versions of Firefox contain an “off” switch in the about:config settings (search for media.autoplay and toggle the setting to false). Be careful when changing other settings.
- There is an extension available for Opera (Disable HTML5 Autoplay).
- Google Chrome, Microsoft Edge, Internet Explorer and Safari currently don't have any way to disable autoplay.
The following sites have more details on how to work with these settings:
- Blocking autoplay in Firefox from Mozilla Support.
- Stop Videos from playing automatically on websites.
- Stop HTML5 autoplay videos in Chrome, Firefox, Opera (but not Edge, Explorer, Safari).
- How to stop videos from autoplaying.
These resources will help you if something goes wrong during the install or operation of your web browser.
Disable .NET Framework Assistant in Firefox
Microsoft surreptitiously installed the .NET Framework Assistant add-in to earlier versions of Mozilla Firefox using Windows Update.
Websites can take advantage of this addin to quietly install software without the user's knowledge, making your computer more vulnerable to malware.
If .NET Framework Assistant is present and the Uninstall button is grayed out or unavailable, follow these instructions to remove it.
Google Chrome Help
Google Chrome is now the world's dominant browser. Many other formerly-independent browsers including Microsoft Edge and Opera have been rebuilt using Chromium.
- Google Chrome Help.
- Google Chrome Help Community.
- Reset Chrome settings to default.
- Fix Chrome problems.
Microsoft Edge is the default browser for Windows 10 but the new Chromium-based Edge is also available for Windows 7 and newer, macOS, iOS and Android.
Safari is the default browser on macOS and iOS.
The Windows version is no longer developed and is unsafe to use.
If you're using Internet Explorer (IE), I strongly recommend you choose another browser. It is obsolete and no longer safe to use.
Windows 10 includes IE along with Microsoft Edge, however it was not intended to be used as your primary browser:
"You see, Internet Explorer is a compatibility solution," wrote [Microsoft security chief] Jackson in the blog. "We're not supporting new web standards for it and, while many sites work fine, developers by and large just aren't testing for Internet Explorer these days. They're testing on modern browsers. — ZDNet
Internet Explorer Particularly Vulnerable
Internet Explorer vulnerabilities allow “remote code executions” which can allow an external user to take control of your computer, especially because of the tight integration with Windows.
ANY Internet Explorer vulnerability is a Windows vulnerability.
Internet Explorer has been long known to be vulnerable to the covert downloading of software from malicious Web sites…Merely visiting the corrupted site is all it takes. — BusinessWeek
No other browser is as tightly integrated into Windows, although some (like Avant) simply enhance Internet Explorer rather than replace it.
Always Update IE
Always update to the latest version of Internet Explorer available for your system (even if you're using another browser) because it provides the best security and features.
I strongly recommend moving to Firefox or another modern browser.