Use following steps to reinstall the Microsoft Edge:-

1. Open Start.
2. Search Windows PowerShell, right-click the result, and select Run as administrator.
3. Copy and paste, or type the following command and press Enter.

Get-AppXPackage -AllUsers -Name Microsoft.MicrosoftEdge | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\AppXManifest.xml” -Verbose}

After completing the steps, Microsoft Edge will reinstall again on your computer.