If Microsoft Copilot keeps crashing on Windows 11, start by installing all pending Windows Updates (Settings → Windows Update) because Copilot depends on the latest system components and bug fixes to run reliably.
Then go to Settings → Apps → Installed apps, find Copilot, and use Advanced options to Repair or Reset the app, which often fixes corrupted files that cause crashes.
Check your Region & Language settings and match them to your actual location, as mismatches can trigger instability.
Also disable VPN/third-party antivirus temporarily and ensure a stable internet connection (Copilot relies on cloud services), and consider running Windows’ Copilot troubleshooters from the Get Help app to diagnose deeper issues.
This is the information we have, but if you have more insights from your experience, please share in the comments.