Windows 10: Store 0xC002001B error after downgrading to Windows 10

I downgrade my Windows before the 10 days grace period ends. I dont like Windows 11 and since Im still eligible I was able to downgrade to Windows 10. Now, Im facing issue where the MS Store never downloads anything and receives this error code. Need help.

:)

 

Error code "0xC002001B" regarding microsoft store apps

Creating another user (administrator/not administrator) still has the same issue.

I performed a clean reset of my computer wiping everything, only installing windows 10.

After all the windows updates, there were a few apps on microsoft store that managed to update. However there is still a long list of apps that give me the "0xC002001B" error when installing/updating.

 

Error code "0xC002001B" regarding microsoft store apps

I believe this is an issue with Windows 10. My company just bought a number of laptops that came with Windows 11. After downgrading them to Windows 10 every single one of them has this issue.

I've done a re-install of Windows 10 after downgrading, both local and cloud based installs and the issue remains.

I've done every trick in the book but everything continues to fail with 0xC002001B. I uninstalled the store and when trying to re-install it i still get the same error. It's so dumb that this is an issue and apparently one without a resolution.

 

Error code "0xC002001B" regarding microsoft store apps

I never ended up installing windows 11, since somehow, launching microsoft solitaire might have allowed some of the apps i needed to install, install. I still have the error, but not with any apps that i need.

I hope microsoft adresses and solves this issue, instead of using it as a resource to make people upgrade to windows 11, since I, personally dislike the new look and performance.

EDIT: Also, i looked through the full error details on "0xC002001B" in the event list.

Some of the details i found:
"error 0xC002001B: While processing the request, the system failed to register the windows.licensing extension due to the following error: <Error message string not found>."

"error 0xC002001B: windows.licensing failed to update critical data for Microsoft.SkypeApp_15.83.408.0_x86__kzf8qxf38zg5c. Try again and contact the package publisher if the problem persists."

"AppX Deployment operation failed for package Microsoft.XboxApp_48.88.11001.0_neutral_~_8wekyb3d8bbwe with error 0x80073CF6. The specific error text for this failure is: error 0xC002001B: windows.licensing failed to update critical data for Microsoft.XboxApp_48.88.11001.0_x64__8wekyb3d8bbwe. Try again and contact the package publisher if the problem persists."

Seems to be a windows licensing issue? I'm not very knowledgeble regarding this subject. But it might be because the PC is bought from a company, so there's issues with the windows keys they use?