Fix Windows Defender Connection Refused via Group Policy
If you see a "connection refused" error when trying to open Windows Defender Security Center or r...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Cloudflare SSL Flexible Redirect Loop on Apache
If you use Cloudflare's Flexible SSL mode with an Apache server, you may encounter an infinite re...
Fix Windows Defender 404 Not Found After Update
After installing a recent Windows update, some users find that Windows Defender is missing or sho...
Fix BitLocker Service Not Starting Error 0x80070005
When you try to start the BitLocker Drive Encryption Service and see error 0x80070005 (Access Den...
Fix Outlook Connection Refused Due to Firewall Settings
If Outlook suddenly shows a "connection refused" error when trying to send or receive email, the ...
How to Fix Remote Desktop Cross-Subnet Connection Issues
You're trying to connect to a computer on a different subnet using Remote Desktop, but the connec...
Issue queue
SitemapEnterprise Windows Update Credential Problem
Bypass Windows Activation Login Loop Without Password
Chrome Extension Icon Not Showing in Toolbar Fix
Troubleshooting PowerShell Service Unavailable Error in Windows 10
Resolve Error 0x80070002 on Windows Update
Fix Windows Activation Version Mismatch via Command Prompt
Troubleshoot Chrome Invalid Configuration
Fix 'Port Already Allocated' with Security Permission Denied
Outlook SSL Certificate Error: Step-by-Step Fix
Fix PowerShell Backup Restore Error 0x80070005
Windows Update Download Stuck: How to Fix
How to Fix BitLocker Recovery Key Expired Error
Bypass Windows Activation Login Loop Without Password
Chrome Extension Icon Not Showing in Toolbar Fix
Troubleshooting PowerShell Service Unavailable Error in Windows 10
Resolve Error 0x80070002 on Windows Update
Fix Windows Activation Version Mismatch via Command Prompt
Troubleshoot Chrome Invalid Configuration
Fix 'Port Already Allocated' with Security Permission Denied
Outlook SSL Certificate Error: Step-by-Step Fix
Fix PowerShell Backup Restore Error 0x80070005
Windows Update Download Stuck: How to Fix
How to Fix BitLocker Recovery Key Expired Error