Fix problems with apps from Microsoft Store
Run the troubleshooter: Select the Start button, and then select Settings > Update & Security > Troubleshoot, and then from the list select Windows Store apps > Run the troubleshooter.
Repair apps and programs in Windows - Microsoft Support
You can repair some apps and programs if they're not running correctly. Note that you won't see repair, change, or modify options for all apps and programs. Repair options from the Settings page. Select Start > Settings > Apps > Installed apps. Select the More icon next to the app you want to fix.
Windows troubleshooters - Microsoft Support
Get Help has troubleshooters you can run for many common scenarios. These often help resolve issues without the need to contact support. If a troubleshooter is available for your issue, select Run to start that troubleshooter.
Use a troubleshooter with Windows 10 - Microsoft Support
Select the type of troubleshooting you want to do, then select Run the troubleshooter. Allow the troubleshooter to run and then answer any questions on the screen.
Fix problems that block programs from being installed or removed
The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs. It also fixes corrupted registry keys.
Running troubleshooters in Get Help - Microsoft Support
After you run any troubleshooter, Get Help provides details on any findings and suggestions for possible remedies. If one of these resolves your problem, close the app and continue working.
Use a troubleshooter with Windows 10 - Microsoft Support
Select the type of troubleshooting you want to do, then select Run the troubleshooter. Allow the troubleshooter to run and then answer any questions on the screen.
Microsoft Store doesn't open - Microsoft Support
Try these troubleshooting steps if Microsoft Store does not launch in Windows 10.
Troubleshoot problems updating Windows - Microsoft Support
If you are using a Windows 10 device, start by running the automated Windows Update troubleshooter in the Get Help app. It will automatically run diagnostics and attempt to fix most of the problems.
Windows Update Troubleshooter - Microsoft Support
Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.