
Fix Windows Activation Connection Timeout After Network Change
If you recently changed your network—switched Wi-Fi networks, moved from Ethernet to Wi-Fi, or ch...
Software troubleshooting desk

If you recently changed your network—switched Wi-Fi networks, moved from Ethernet to Wi-Fi, or ch...

After a Chrome update, you might see errors like NET::ERR_CERT_COMMON_NAME_INVALID or

You open Chrome and see a message like "Token expired" or "Authentication token expired" before t...

You installed Ubuntu alongside Windows and now Windows shows it's not activated. This is a known ...

Windows activation often fails when a proxy server is blocking the connection to Microsoft's acti...

If Windows Security (formerly Windows Defender) doesn't start automatically after you log in, you...