Windows Defender Troubleshooting Checklist
Windows Defender (now Microsoft Defender Antivirus) usually runs quietly in the background, but s...
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If you changed your Windows password and now see 'authentication failed' errors in Task Scheduler...
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If you notice that Windows Security (formerly Windows Defender) is using a lot of memory—sometime...
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If you see a 'file locked' error when trying to install or update an app from the Microsoft Store...
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