Checklists for software errors, setup, and tool workflows.

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Fix PowerShell 502 Bad Gateway in IIS: Step-by-Step

A 502 Bad Gateway error in IIS typically means a downstream server or application pool failed. Wh...

Fix Windows Security Service Disabled by Group Policy

If you see "Windows Security service is disabled by group policy" or find that Windows Security i...

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...

How to Fix Outlook Rate Limit Error in Office 365

Understanding the Error

You may see a message like "Too many requests" or "Server busy" ...

How to Fix Microsoft Teams 404 Not Found Permissions Error

You try to access a team, channel, or file in Microsoft Teams and get a 404 Not Found

Fix 'Windows Security Cannot Connect to Microsoft Defender' Error
When you open Windows Security and see the message 'Windows Security cannot connect to Microsoft ...