Fix Command Prompt Service Unavailable on Windows 11
When you try to open Command Prompt on Windows 11 and see 'Service unavailable' or a blank window...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Chrome Authentication Failed Due to Proxy Settings
If you see 'authentication failed' in Chrome when trying to access a website, your proxy settings...
How to Fix DNS Errors When Searching in Windows 10
If you get a DNS error when searching in Windows 10—like "DNS server not responding" or "Server D...
How to Fix Outlook Authentication Failed on iPhone Setup
When setting up Outlook on an iPhone, you may see an error that says authentication failed. This ...
Fix Microsoft Store Authentication Fails Due to Proxy
If you see authentication errors in Microsoft Store and suspect a proxy, you're likely hitting a ...
Fix Windows Search Blank White Screen in Windows 10
You open the Start menu or File Explorer and start typing, but instead of search results you see ...
Topic paths
Quick titles
Fix Microsoft Teams Microphone Not Working in MeetingsHow to Fix RDP Error 0x4 Settings ResetWindows Update Log Location and TroubleshootingResolve BitLocker Token Expired Error in Azure AD SyncFix Proxy Error in CMD Sync ToolsTroubleshoot Task Scheduler 0x1 FailureHow to Configure Python in Command PromptHow to Find Chrome Profile Log File Location