Roblox Microsoft app starts for a few seconds then crashes.

Hi. My name is Brilliant and I am happy to assist you today.

You can try some of these possible fixes:
1. Check for server status.
2. Delete Temporary Internet files and cookies.
3. Install all available Windows updates.
4. Update drivers.
5. Delete Roblox AppData folder.
6. Reset your Internet Options.
7. Reinstall Roblox.

For more details on the above kindly visit: https://ugetfix.com/ask/how-to-fix-roblox-not-opening-in-windows/

I hope the above helps resolve your query.

i tried all of the fixes and roblox still crashes

I am sorry you've exhausted all the troubleshooting methods above with no solution in sight. I advise that you contact Microsoft support for further assistance: support.microsoft.com

I'll try that, thank you for your help!

there is no fix microsoft can offer. It's on roblox side.

They have been made aware of the issue and are working on it. Roblox update that is freezing/crashing ms app for roblox. Has to do with one of their updates from the last month or 2 months.