
Enable Windows Security Manually When It Fails to Start
If Windows Security (formerly Windows Defender) fails to start, you may see an error like "This a...

If Windows Security (formerly Windows Defender) fails to start, you may see an error like "This a...

You open Command Prompt as administrator, type ipconfig /flushdns, and press Enter. ...

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

You open Task Manager and see Command Prompt (cmd.exe) consuming a large percentage of CPU or a l...

You try to set up or send email in Outlook, and you see an error about port 587 already being all...

If you see a notification that Windows Defender threat service has stopped, real-time protection ...