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Windows Security Not Scanning for Viruses: How to Fix

If Windows Security (formerly Windows Defender) is not scanning for viruses, you may see an error...

Fix Windows Activation Error 504 on VPN Connection

If you see error 504 when trying to activate Windows while connected to a VPN, it usually means t...

How to Fix Outlook 'Command Not Found' Error

You open Outlook and see a message like "The operation failed. The command is not available" or "...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN

Fix OneDrive Sync Error 0x8004de40: Practical Steps

You see error code 0x8004de40 when OneDrive won't sync. It usually means a corrupted cached file ...

Checklist to Fix Windows Update Port Allocation Error

When Windows Update fails with a port allocation error, it usually means another program is using...