The method you suggested doesn't work.
I googled and tried to reinstall the ms store. Could this error be related?
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PS C:\Windows\system32> Get-Appxpackage -Alluser *store
Name : Microsoft.WindowsStore
Publisher : CN=Microsoft Corporation, O=Microsoft Corporation, L=Redmond, S=Washington, C=US
Architecture : X64
ResourceId :
Version : 22202.1402.0.0
PackageFullName : Microsoft.WindowsStore_22202.1402.0.0_x64__8wekyb3d8bbwe
InstallLocation : C:\Program Files\WindowsApps\microsoft.windowsstore_22202.1402.0.0_x64__8wekyb3d8bbwe
IsFramework : False
PackageFamilyName : Microsoft.WindowsStore_8wekyb3d8bbwe
PublisherId : 8wekyb3d8bbwe
PackageUserInformation : {S-1-5-18 [S-1-5-18]: Staged}
IsResourcePackage : False
IsBundle : False
IsDevelopmentMode : False
NonRemovable : False
IsPartiallyStaged : False
SignatureKind : Store
Status : Ok
PS C:\Windows\system32> Add-AppxPackage -register "C:\Program Files\WindowsApps\microsoft.windowsstore_22202.1402.0.0_x64__8wekyb3d8bbwe\AppxManifest.xml" -DisableDevelopmentMode
Add-AppxPackage : 배포에 실패했습니다. HRESULT: 0x80073D04, 서명이 잘못되었습니다. 개발자 모드에서 등록하려면 AppxSigna
ture.p7x 및 AppxBlockMap.xml이 유효하거나 없어야 합니다.
오류 0x80070005: Microsoft.NET.Native.Framework.2.2_2.2.29512.0_x64__8wekyb3d8bbwe 위치에서 패키지를 열지 못했습니다.
참고: 추가 정보에 대해서는 이벤트 로그에서 [ActivityId] 8e378214-2b25-000b-be67-388e252bd801을(를) 찾아보거나 명령줄 Ge
t-AppPackageLog -ActivityID 8e378214-2b25-000b-be67-388e252bd801을(를) 사용하십시오.
위치 줄:1 문자:1
+ Add-AppxPackage -register "C:\Program Files\WindowsApps\microsoft.win ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (C:\Program File...ppxManifest.xml:String) [Add-AppxPackage], Exception
+ FullyQualifiedErrorId : DeploymentError,Microsoft.Windows.Appx.PackageManager.Commands.AddAppxPackageCommand
PS C:\Windows\system32>