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

Fix Windows Security Blank Screen in Command Prompt

You open Windows Security from Command Prompt and see nothing but a blank window. This can happen...

How to Clear SSH Known Hosts and Fix Host Key Verification Failed

Chrome Profile Missing After Update: How to Restore It

After a Chrome update, you might see a message that your profile is missing or corrupted, or Chro...

Fix Windows Update Error 0x80070020: Port Already Allocated

When you see error 0x80070020 during a Windows Update, it usually means a program is already usin...

Fix OneDrive Sync Reset Permission Denied Error

When you try to reset OneDrive sync using the command onedrive.exe /reset or through...

Fix Windows Defender Proxy Error 0x80070422

If you see error 0x80070422 when opening Windows Defender or running a scan, it usually means the...