Fix Windows Defender SSL Certificate Sync Errors
You might see a warning that Windows Defender can't update because of an SSL certificate error. T...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labHow to Fix Windows Defender File Locked Error 0x80070020
Error 0x80070020 often appears when Windows Defender (Microsoft Defender Antivirus) is scanning a...
How to Fix an Outlook File Locked Due to Sync Issue
You try to open Outlook and see a message that your data file (.pst or .ost) is locked. Often thi...
Fix Remote Desktop Group Policy Error on Startup
You try to connect to a remote desktop, but the session fails with a message about a Group Policy...
Fix Windows Security Real-Time Protection Stuck
Windows Security’s real-time protection can get stuck in an “on” or “off” state, sometimes refusi...
Fix BitLocker Rate Limit Error After Multiple Attempts
You’ve entered your BitLocker PIN or recovery key several times, and now you see a rate limit err...