Fix Windows Security Token Expired Error 0x80070520
You see error 0x80070520 with the message 'The security token has expired.' This usually happens ...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix 'File Locked' or 'Permission Denied' During Windows Update
You try to install a Windows update, but it fails with a message like "File locked" or <...
Fix Microsoft Store Authentication Failed Error
When you see an authentication failed error in the Microsoft Store, it usually means the store ca...
Locate Windows Search Log Files in Windows 11
When Windows Search isn't working right—missing files, slow results, or high CPU usage—the log fi...
Fix PowerShell Permission Denied When Running Script
You try to run a PowerShell script and get a 'permission denied' error. This usually happens beca...
Remote Desktop Black Screen After Connection: How to Fix
You connect to a remote PC via Remote Desktop Protocol (RDP), see the login screen, but after ent...
Issue queue
SitemapHow to Fix Task Scheduler Settings That Won't Reset
How to Fix Windows Defender Rate Limit and Permission Errors
Chrome Port Already Allocated: Quick Fix Guide
Mount BitLocker Encrypted NTFS in Linux
How to Run Windows Activation as Administrator
Fix USB Key Not Recognized for BitLocker
How to Set Up Remote Desktop for Work from Home
Outlook for Mac Stuck on Loading Profile: Fixes to Try
Fix Outlook Sending Limit Error
Smooth Chrome Remote Desktop Setup and Fixes
Troubleshooting PowerShell 429 Errors
SSH Works but Git Clone Fails Publickey
How to Fix Windows Defender Rate Limit and Permission Errors
Chrome Port Already Allocated: Quick Fix Guide
Mount BitLocker Encrypted NTFS in Linux
How to Run Windows Activation as Administrator
Fix USB Key Not Recognized for BitLocker
How to Set Up Remote Desktop for Work from Home
Outlook for Mac Stuck on Loading Profile: Fixes to Try
Fix Outlook Sending Limit Error
Smooth Chrome Remote Desktop Setup and Fixes
Troubleshooting PowerShell 429 Errors
SSH Works but Git Clone Fails Publickey