Starting with Windows 10 Anniversary update, Microsoft added a new entry IsInbox in the SQLite database C:\ProgramData\Microsoft\Windows\AppRepository\StateRepository-Machine.srd for the inbox apps. And trying to remove app app flagged as IsInbox fails with 0x80073CFA.

But there is an ugly workaround, that was discovered in April 2017.

You need to download and install the tools ProcessHacker and DB Browser for SQLite.

• run ProcessHacker 2 as admin, select a C:\Windows\System32\svchost.exe, do a rightclick and select Misc->Run as this user

Now select here C:\Program Files\DB Browser for SQLite\DB Browser for SQLite.exe and start it. In SQLite Browser, click on Open database

and open the file C:\ProgramData\Microsoft\Windows\AppRepository\StateRepository-Machine.srd (change the file type in open dialog to all files to see it).

Now, click on the Browse Data tab, and change the table to Package

Now select the apps you want to remove and change the 1 for the column IsInbox to 0 and save the changes.

repeat this for all apps you want to remove and now the Powersehll commands should work.

But the author wrotes, that Microsoft blocks the upgrade to newer Windows builds if inbox apps are removed. So keep this in mind.

Starting with Windows 10 Anniversary update, Microsoft added a new entry IsInbox in the SQLite database C:\ProgramData\Microsoft\Windows\AppRepository\StateRepository-Machine.srd for the inbox apps. And trying to remove app app flagged as IsInbox fails with 0x80073CFA.

But there is an ugly workaround, that was discovered in April 2017.

You need to download and install the tools ProcessHacker and DB Browser for SQLite.

• run ProcessHacker 2 as admin, select a C:\Windows\System32\svchost.exe, do a rightclick and select Misc->Run as this user

Now select here C:\Program Files\DB Browser for SQLite\DB Browser for SQLite.exe and start it. In SQLite Browser, click on Open database

and open the file C:\ProgramData\Microsoft\Windows\AppRepository\StateRepository-Machine.srd (change the file type in open dialog to all files to see it).

Now, click on the Browse Data tab, and change the table to Package

Now select the apps you want to remove and change the 1 for the column IsInbox to 0 and save the changes.

repeat this for all apps you want to remove and now the PowerShell commands should work.

But the author writes that Microsoft blocks the upgrade to newer Windows builds if inbox apps are removed. So keep this in mind.