How to Enable PUA Protection in Microsoft Edge
PUA (Potentially Unwanted Application) protection in Microsoft Edge blocks sneaky software that slows down your PC, shows spammy ads, or installs junk you never asked for. This built-in security feature acts like a filter, stopping you from downloading risky programs that fall just short of being full-blown viruses.
Starting with Microsoft Edge version 91 and newer, the browser automatically checks every file against an updated blocklist to keep your downloads clean. Turning on this extra layer of defense takes a few clicks in your settings and saves you from dealing with unwanted browser extras later.
Navigate to Edge Settings, then Privacy, search, and services. Scroll down to the Security section and toggle the “Block potentially unwanted apps” switch to On or Off. This setting protects your PC from unwanted software.
How to Turn PUA Protection On or Off in Edge
Step 1Open Microsoft Edge
Start the Edge browser on your computer.
Step 2Go to Settings
Look at the top right corner. Click the three horizontal dots button (labeled “Settings and more”). Then click Settings . You can also press Ctrl+comma to open Settings directly.

Step 3Find Privacy Settings
On the left side panel, click Privacy, search, and services.

Step 4Change PUA Protection
PUA Protection Microsoft Edge settings are found in the privacy and security menu where you can turn on the block potentially unwanted apps switch to stop bundleware and hidden adware from downloading alongside legitimate software. You control this feature directly within your browser settings to keep your device safe from sneaky third-party downloads.
PUA Protection works alongside Edge's SmartScreen feature. Both should remain enabled for comprehensive protection.

What happens? When you turn it on, Edge blocks unwanted programs. When you turn it off, Edge allows them.
Step 5Close Settings
You are done. Close the Settings page.
How to Control PUA Using Windows Registry
There is another way to manage PUA Protection. You can use the Windows Registry Editor. This method works for all users on your computer.
Step 1Open Registry Editor (Admin Required) %%SC0%%
Press Win+R, type regedit and press Enter. Click Yes to run as administrator. You need admin rights for this step.
Step 2Navigate to the Edge Folder
Go to this location in the registry:
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge
Step 3Find or Create SmartScreenPuaEnabled
SmartScreenPuaEnabled is the specific Windows Registry Editor value you need to locate under HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge to manage PUA Protection Microsoft Edge settings manually. Look for this REG_DWORD entry in the right-hand panel or create it yourself if it is missing so you can enforce security policies across your computer.
The SmartScreenPuaEnabled registry item, a REG_DWORD type, appears in the right side panel of the registry editor. Double-clicking the SmartScreenPuaEnabled registry item opens its value for editing, which is crucial for controlling Potentially Unwanted App (PUA) protection in Microsoft Edge.
If you do not see it: Right-click a blank area on the right side. Click New and then DWORD (32-bit) Value. Name it SmartScreenPuaEnabled.

Step 4Set the Value
Type 1 to turn PUA blocking on for everyone. Type 0 to turn PUA blocking off for everyone.
Step 5Restart Your Computer
You may need to restart your computer for the changes to take effect.
PUA protection changes affect all users on your computer. The registry method provides stronger protection than the browser settings. This is because registry changes apply system-wide, overriding browser configurations.
To Go Back to Normal
Delete the SmartScreenPuaEnabled item you created. This restores the default setting.
General
For managed devices or organizations: PUA Protection can also be controlled via Group Policy. Check gpedit.msc under Computer Configuration Administrative Templates Microsoft Edge for centralized management.
Summary
PUA Protection Microsoft Edge settings stop unwanted apps and bundleware from installing on your computer through either the browser settings menu or the Windows Registry Editor. You can turn this feature on using the built-in security controls or manage it via advanced system tweaks depending on what works best for your setup.
- Easy way: Use the Edge Settings menu under Privacy, search, and services.
- Advanced way: Use the Windows Registry Editor to change the SmartScreenPuaEnabled value (requires admin rights).
PUA Protection helps protect your computer from potentially unwanted applications. Most people should leave PUA Protection turned on. You should turn PUA Protection off only if you need to install a specific program that PUA Protection blocks. Always be careful when disabling security features on your computer.
Additional security: Consider enabling Edge's Enhanced tracking prevention and Tracking prevention features for comprehensive protection against unwanted content and tracking.
Is pua a malware?
PUA isn't considered a virus, malware, or other type of threat, but it might perform actions on endpoints that adversely affect endpoint performance or use.
How to prevent pua?
Enable Security Features: Use built-in security features that block PUAs, like Microsoft Defender SmartScreen for Windows. Install Antivirus or Antimalware Software: Choose tools that can actively detect and remove PUAs. Perform Regular Scans: Routine scans help catch PUAs and maintain your system's integrity.
How to remove pua virus?
So the virus won't be active. Now that we're in safe mode let's track down and delete the virus files. Open file explorer and head to this location. See into users into your username.
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About the Author
Richard
Tech Writer, IT Professional
Richard, a writer for Geek Rewind, is a tech enthusiast who loves breaking down complex IT topics into simple, easy-to-understand ideas. With years of hands-on experience in system administration and enterprise IT operations, he’s developed a knack for offering practical tips and solutions. Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.
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