Fix Microsoft Store Error 0xc03f40c8
The following fixes will help you in resolving Error 0xc03f40c8 for Microsoft Store on Windows 11/10:
1] Use Windows App Troubleshooter
Microsoft has released a dedicated Microsoft Store apps Troubleshooter.
You need to download and run it.
2] Run Windows Update Troubleshooter
Run the Windows Update Troubleshooter and then try again.
3] Reset Microsoft Store via Settings
Open Windows 10 Settings > Apps. Here you need to reset the Microsoft Store app. Having done that, try again.
4] Reset the connectivity mechanism for the Microsoft Store
You need to use the Network Reset option in Settings to reset the connectivity mechanism. Related post: List of Microsoft Store error codes, descriptions, resolution. I hope these fixes help you fix the error.