ace browser

Remove Ace Browser because you did not install or recognize it, but its name alone is not enough to confirm that it is a virus.

1. Remove it from Microsoft Edge

1. Open Edge and enter edge://extensions in the address bar.
2. Find Ace, Ace Browser, Ace Browser Shield, or any other extension you do not recognize.
3. Select Remove, then confirm Remove. Alternatively, right-click its icon beside the address bar and select Remove from Microsoft Edge. ^1^
4. Close and reopen Edge. Confirm the extension no longer appears at edge://extensions.

If Ace changed your search engine:

1. Open Edge → Settings → Privacy, search, and services.
2. Select Search and connected experiences → Address bar and search.
3. Set Search engine used in address bar back to your preferred provider. ^2^

2. Check whether it is also a Windows application

On Windows 10:

1. Open Start → Settings → Apps → Apps & features.
2. Look for Ace Browser or another unfamiliar browser-related application.
3. Select it and choose Uninstall.
4. Restart Windows and verify that it has not returned. ^3^

Do not uninstall Microsoft Edge itself; remove only the unrecognized Ace extension or application.

3. Scan the computer

Run a Windows Security scan after removing it:

1. Select Start → Settings → Update & Security → Windows Security.
2. Open Virus & threat protection → Scan options.
3. Run a Full scan.
4. If Ace returns, save your open work and run Microsoft Defender Offline scan from the same page. The computer will restart during that scan. Defender Offline is intended to detect threats that hide or reinstall themselves while Windows is running. ^4^

If Remove is unavailable or says “Managed by your organization”

First open:

• edge://extensions and check whether Ace has a briefcase icon.
• edge://policy and look for entries such as ExtensionSettings or ExtensionInstallForcelist.

If this is a work or school computer, contact its administrator and do not remove policies.

If it is definitely your personal PC and is not managed by work or school:

1. Run the Defender scans above first.
2. Back up important data and the registry.
3. Press Windows key + R, enter regedit, and press Enter.
4. Inspect these locations:
   • HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge
   • HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Edge
5. Delete only the policy entry identified as enforcing the unwanted extension, restart Edge, and remove Ace from edge://extensions.

Microsoft also documents the following elevated commands, but they delete all Edge policies, not only Ace’s policy. Do not use them on a managed device:

reg delete HKCU\SOFTWARE\Policies\Microsoft\Edge /f
reg delete HKLM\SOFTWARE\Policies\Microsoft\Edge /f

Registry changes can affect Edge configuration; use the commands only when the PC is confirmed unmanaged and removing the specific policy entry is not practical. ^2^

How it may have been installed

Edge extensions normally require selecting Get and then approving Add extension, and Edge can also install compatible extensions from the Chrome Web Store. An extension may also arrive with another downloaded application or be forced through an Edge policy. The available information cannot determine which method installed Ace on this computer. ^1^

References

1. Add, turn off, or remove extensions in Microsoft Edge | Microsoft Support
2. Microsoft Edge Extensions: Frequently Asked Questions | Microsoft Support
3. [Windows 10](https://support.microsoft.com/windows/experience/performance-optimization/tips-to-improve-pc-performance-in-windows#solution-2-run-a-malware-scan-to-detect-and-remove-threats-that-slow-pc-performance)
4. Troubleshoot problems with detecting and removing malware | Microsoft Support