
Fix Outlook Not Opening After a Recent Update
After a Windows or Microsoft 365 update, Outlook may fail to open—no window appears, or it crashe...

After a Windows or Microsoft 365 update, Outlook may fail to open—no window appears, or it crashe...

You open Task Manager and see a process like sppsvc.exe or Software Prot...

When Outlook fails to connect to your email server and displays a DNS error like 'DNS server not ...

When Windows Security (formerly Windows Defender Security Center) can't update virus definitions ...

If you open Start and type 'Windows Security' but nothing appears, or you get an error when tryin...

If you see the message “Command Prompt has been disabled by your administrator” when trying to op...