Knowledge base for software setup, errors, and daily tool work.

Windows Defender Troubleshooting Guide for IT Admins

Windows Defender (Microsoft Defender Antivirus) is the default endpoint protection in Windows 10 ...

BitLocker Proxy Error Troubleshooting Checklist

When BitLocker reports a proxy error, it usually means the encryption key cannot be retrieved fro...

Fix Windows Security Authentication Error 0x80070035

How to Fix Slow Remote Desktop Connection in Windows 10

You connect to a remote Windows 10 machine and the screen lags, typing is delayed, or file transf...

Fix Windows Update Error 0x80070643 Installation Failed

You see error 0x80070643 when trying to install a Windows update, and the setup fails partway thr...

Fix Windows Security Blank Screen After Update

After a Windows update, some users open Windows Security and see only a blank white or gray scree...