There is an unauthorized extension on my browser and I can't remove it

Hi Payton,

Thank you for posting, I am here to help you day.

Possible cause of this is due to The unauthorized "Quantum Plasmius" extension in Microsoft Edge is a type of malware, likely added because of a bundled software installation, a download of a malicious file, or a group policy that was changed without your knowledge.

Try this step to help fix the problem:

Try to scan the System with Microsoft Safety Scanner.

Click the link to download:

https://docs.microsoft.com/en-us/windows/security/threat-protection/intelligence/safety-scanner-download

looking forward to helping you out.  If you need more help please let me know. If the answer is helpful, please click "Accept Answer".

Best regards,

Jansher

Please provide Farbar Recovery Scan Tool (FRST) logs for analysis.

https://www.bleepingcomputer.com/download/farbar-recovery-scan-tool/

Note: If you are using Edge or Chrome, SmartScreen may initially block the download. Click on the three dots next to the warning and select Keep => Click the Delete drop arrow => Keep anyway.

• If your computer's language is not English, rename FRST64.exe to FRST64English.exe
• Run the tool, leave the default settings, and press Scan.
• Zip the logs, FRST.txt and Addition.txt, then upload to a cloud storage service like OneDrive, Google Drive or gofile.io
• Post the share link.

Share OneDrive files and folders - Microsoft Support