
Fix Windows Defender Not Starting After Update
After a Windows update, you might see that Windows Defender (now called Microsoft Defender Antivi...
Software troubleshooting desk

After a Windows update, you might see that Windows Defender (now called Microsoft Defender Antivi...

You open the Microsoft Store, try to sign in, and get an authentication failed error. This can ha...

If you manage a shared mailbox in Outlook and suddenly see an error about being rate limited, you...

You might see this error when trying to activate Windows after a hardware change, a major update,...

When you try to activate Windows and see an error like “You don’t have permission to activate” or...

You backed up your Windows activation using the built-in backup tool or a third-party utility. La...