Software troubleshooting desk

Practical fixes for tool errors, setup blocks, and workflow issues.

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Fix Outlook Service Unavailable Error in Exchange 2019

You open Outlook, try to connect to your Exchange 2019 mailbox, and see: "Outlook service is ...

Windows Defender Rate Limit Error Troubleshooting Checklist
You might see a Windows Defender rate limit error when scanning files or updating definitions. Th...

Fix SSL Certificate Error When Using cURL in Command Prompt
When you run a cURL command in Windows Command Prompt and see an error like SSL certificate...

Redis Server Not Starting: Log File Shows No Errors You try to start Redis, but it fails immediately—no error messages in the log file, nothing obvio...

Fix Windows Terminal Connection Refused After Update After a Windows or Windows Terminal update, you might see "connection refused" when trying to ope...

Fix Windows Activation 502 Bad Gateway Due to Proxy Settings If you see a "502 Bad Gateway" error when trying to activate Windows, the problem is often a misc...

Issue queue Sitemap Windows Search Configuration Guide for IT Admins OneDrive Configuration Error Repair Steps Solve 'Activation Service Unavailable' Error on Windows Fix Windows Security When It Won't Scan Outlook Calendar Permission Denied Fix Fix Remote Desktop Certificate Error 0x80090322 Troubleshooting Connection Refused in Windows Terminal Proxy Remote Desktop VPN Connection Troubleshooting Fix Microsoft Store Error 0x80070005 Permission Denied Troubleshoot Microsoft Store Not Opening on Mac Collect Windows Update Logs for Troubleshooting Command Prompt Hang After Windows Update: Solutions Desk note Troubleshooting paths Home Windows FixesmacOS HelpBrowser IssuesOffice ToolsDeveloper ToolsCloud SoftwareSecurity ToolsBackup RecoveryNetwork ToolsDatabase ToolsAI ToolsProductivity AppsCLI ErrorsDocker KubernetesEmail ClientsFile Utilities