How to Allow an App Through Windows Defender Firewall
If an app can't connect to the internet or network, Windows Defender Firewall may be blocking it....
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Jupyter Notebook Token Authentication Error
When you start Jupyter Notebook, you might see a prompt asking for a token or password, or the br...
Fix Microsoft Store Error 0x80073cf3: Service Unavailable
When you see error code 0x80073cf3 in the Microsoft Store, it usually means the Store can't reach...
BitLocker Stuck on Loading Screen: Practical Fixes
You restart your PC, but instead of the usual login screen, you see a black screen with a spinnin...
Setup Windows Defender to Trust an SSL Certificate
If you're running a local development server or an internal application with a self-signed or pri...
How to Fix Windows Defender Slow Performance
Windows Defender (now Microsoft Defender Antivirus) can sometimes cause noticeable slowdowns, esp...
Topic paths
Quick titles
How to Fix Chrome Extensions Not Loading on Windows 10Resolve Chrome Configuration Invalid MessageHow to Fix Task Scheduler File Lock ErrorsFix Outlook File Locked Error: Practical StepsHow to Fix PowerShell Execution Policy Restricted on Windows 11Troubleshoot Connection Refused Error for Windows Offline ActivationHow to Restore RDP After Windows UpdateBitLocker Auto Unlock Registry Fix Guide