
How to Fix Windows Defender Firewall Blocked App
You try to open an app, but it either won't start or can't connect to the internet. A common caus...
Software troubleshooting desk

You try to open an app, but it either won't start or can't connect to the internet. A common caus...

When you see a message like “Windows activation authentication failed” or “license not genuine,” ...

When you try to connect to a remote PC and see error code 0x4, the connection usually fails befor...

If you see error 407 (Proxy Authentication Required) when using Command Prompt for network operat...

You open OneDrive and see a 'Connection refused' error. Your files aren't syncing, and the OneDri...

After a recent Windows update, you might see "Access Denied" when trying to connect via Remote De...