
Windows Defender Not Opening? Here's How to Fix It
You click the Windows Defender icon, but nothing happens—or you get an error saying the app didn'...

You click the Windows Defender icon, but nothing happens—or you get an error saying the app didn'...

You may see error code 0x80070422 when opening Windows Security, often accompanied by a message a...

You're trying to manage BitLocker via the web console or a recovery key portal, and instead of th...

You see a message that your Windows activation token has expired, even though you're connected to...

You open Windows Security and see 'Service unavailable' or 'Permission denied'. The app may not o...

You try to update Windows Search, but get a 'permission denied' message. This usually happens whe...