Get-AppxPackage *windows.photos* | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}

Get-AppXPackage | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register « C:\Program Files\WindowsApps\Microsoft.Windows.Photos_15.1208.10480.0_x64__8wekyb3d8bbwe\AppxManifest.xml »}