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  1. Access to this PC has been blocked for security reasons

  2. Locked Computer due to security threat - Microsoft Community

  3. Have a scam come up saying my computer is locked up and need …

  4. COMPUTER LOCKED UP by DEFENDER - Microsoft Community

  5. I have a pop up window that says "Access to this PC has been …

  6. I received a security alert that my computer is locked up from ...

  7. Access to my computer has been blocked - Microsoft Community

  8. Access to this pc has been blocked! - Microsoft Community

  9. Your Microsoft Computer has been blocked and call Microsoft

  10. windows 10 says this app has been blocked by system administrator