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

Checklist for Windows Security Module Errors

When Windows Security (formerly Windows Defender) throws module errors, you might see messages li...

Fix Chrome Profile 502 Bad Gateway on Windows

You open Chrome and see a 502 Bad Gateway error tied to your user profile. This ...

Fix OneDrive Sync Error 0x80070020: File Locked

OneDrive sync error 0x80070020 typically appears when a file is locked by another application (e....

Check Which Application Is Using Remote Desktop Port (3389)

When you try to start Remote Desktop and get an error that the port is already in use, something ...

Fix BitLocker High Memory Usage After Windows Update

Why BitLocker Memory Usage Spikes After an Update

After a Windows update, some users noti...

Windows Defender Version Mismatch: Practical Fix Checklist

If you see a “version mismatch” error in Windows Defender (Microsoft Defender Antivirus), it usua...