Knowledge base for software setup, errors, and daily tool work.

How to Unlock an Outlook File Locked After Crash Recovery

After an unexpected crash, Outlook may refuse to open your PST or OST file, showing a message tha...

Fix Remote Desktop High CPU Usage Caused by Antivirus

You're connected to a remote desktop and the session becomes sluggish. Task Manager shows high CP...

Fix PowerShell Remote Connection Refused Error

How to Fix Microsoft Teams 404 Error by Clearing Cache

If you're seeing a 404 error in Microsoft Teams—often when opening a chat, channel, or file—it's ...

How to Fix Chrome Browser Rate Limit Error

You're browsing and suddenly Chrome shows a '429 Too Many Requests' or 'Rate Limit Exceeded' erro...

How to Fix Outlook Service Unavailable in Safe Mode

When Outlook shows 'service unavailable' even after you start it in safe mode, the problem is oft...