Roblox application says "An unexpected error has occurred, we're sorry!" Never loads.

Hello Anna,

I'm Louie, and I'm happy to help you today. Hope you're doing well and safe there. I'm sorry that you're having trouble with ROBLOX. I would suggest you to try each solution below to fix the issue.

Solution 1 - Run Windows App Troubleshooter:

Windows Key+X > Click Settings > Click Update & security > Click Troubleshoot > Scroll down to the bottom > Click Windows Store Apps > Click Run the Troubleshooter

Solution 2 - Check for App Updates in MS Store Hub (three dots at top right of Store app) > Downloads & Updates.

Solution 3 - Try to Reset or Repair the app
Go to Windows Settings > Apps > Apps & Features > [Name of App] > Advanced Options > Reset or Repair. Restart PC.

Solution 4 - Reset Windows Store through Command Prompt

Type cmd in Windows Search box > Right click on Command Prompt > Run As Administrator > Type WSreset.exe and click Enter > Reboot your computer

Solution 5 - Re-register All Store apps (If get many Reds, you can just ignore it)
Windows Key+X > Windows Powershell (Admin) > Copy the following from below and right click in Powershell to paste > Enter > Restart your computer

Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}

Solution 6 - Uninstall the app then restart PC, reinstall the app from MS Store Hub (three dots at top right of Store app) > My Library.

Hope this helps and looking forward for good results.

Kind regards,
Louie