Checklists for software errors, setup, and tool workflows.

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How to Fix PowerShell Authentication Failed Error

When you see an "Authentication failed" error in PowerShell, it usually means the system couldn't...

Fix Windows Update Authentication Failed via Credential Manager

When Windows Update fails with an authentication error, the problem often traces back to stored c...

Fix Windows Activation SSL Certificate Error Not Working

You're trying to activate Windows, but you see an SSL certificate error and activation fails. Thi...

Fix Windows Security Proxy Error from Antivirus Conflicts

You open Windows Security and see a proxy error, or your system reports that Windows Security can...

Fix Windows Update High CPU Usage with Permission Denied Errors

You open Task Manager and see a process like TiWorker.exe or svchost.exe

Fix Windows Defender High Memory Usage & Error 0x80070002
You might see Windows Defender consuming a lot of memory, and then get error code 0x80070002 when...