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1) Fixing the app store:
1. Open registry editor typing regedit.exe from a command line. 2. Browse to the registry key at HKEY_CURRENT_USER\\Software\\Classes\\Local Settings\\software\\microsoft\\windows\\currentversion\\appmodel\\repository\\packages. 3. Right click on the “packages” key and bring up the “Permissions” tab. 4. Click the “Advanced” button located at the bottom right corner. 5. Check to see the account name that shows up as the “Owner” (this is the first line of text on the “advanced security settings” dialog for the “packages” key). It should say “SYSTEM”. (For me this showed the built-in local Administrators group) 6. If it is any other account, click on the “Change” button next to it. 7. Type SYSTEM in the “select user” dialog. If “Multiple Names Found” window comes up, select the row for “SYSTEM”. 8. Click OK to the dialogs and close them all. 9. Run from admin command prompt: Powershell -ExecutionPolicy Unrestricted Add-AppxPackage -DisableDevelopmentMode -Register $Env:SystemRoot\\WinStore\\AppxManifest.xml
