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Add an exclusion to Windows Security
To check if Windows Defender is blocking SigmaXL:
Windows 10
- Click Start > Settings:
- Click Update & Security:
- Click Windows Security:
- Click Virus & threat protection
Windows 11 Instructions
- Click Start > Settings:
- Click Privacy & security:
If Windows Security has incorrectly flagged SigmaXL as untrusted, you can prevent it from blocking it by adding the folder to the exclusions list.
- Step One
- Step Two
- Step Three
Frequently asked questions