
Fix 'Access Denied' Errors After Windows Update
After a Windows update, you might see "Access Denied" errors when trying to open Windows Security...
Software troubleshooting desk

After a Windows update, you might see "Access Denied" errors when trying to open Windows Security...

You launch Windows Defender Security Center or try to run a scan, and you see a proxy error—somet...

You're browsing in Chrome and suddenly get a persistent SSL certificate error—even on sites you k...

You open Outlook on Windows 11 and get an error that a port is already allocated. This usually ha...

You search for a file in Windows Explorer, and instead of results, you get a 'file in use' error....

You try to sync files with OneDrive on Ubuntu, but it hangs—no progress, no errors. This is commo...