If you have changed the marketplace region as I described in the previous post and now you try updating applications that were installed in the old region, you are probably going to get the next error:

“We’re having a problem with this app or game because it no longer appears in your purchase history. This can happen if you’ve recently switched the gamertag associated with your Windows Live ID. We’re sorry, but you’ll need to buy this app or game again to continue using it.”

And now this application is stuck on your phone, you won’t be able neither to update nor to delete it.

The only work-around I’ve found so far is reinstalling the application through the web marketplace. So go to windowsphone.com/marketplace, search for your app and hit ‘Reinstall this app’ button.

When I created Zune account for my brand new WP7 device, I selected the US region – mine was not supported at that moment. Few months later, tired from not being able to buy any apps or games (my card was not accepted by the US marketplace), I decided to switch to my local region. Thankfully, Microsoft has added support for new markets prior to the Mango update.

The process if migrating your account is not so obvious. You won’t find anything related at Zune or Live websites. That can only by done through the Xbox account management (in case you didn’t know – your account is shared between Xbox Live and Zune services).

So go to your account page at https://live.xbox.com/en-US/Account, find the Manage Account Region link.

Manage account region

You will be noted that you can change the region once in 12 months and that you will not be able to re-download all your Xbox Live or Zune content, however it will not be deleted from your devices, so you can back it up.

Read that information carefully and ensure that you understand the consequences. Click Next and select the new region, then keep moving through the confirmation pages.

If everything is fine, your account will be switched to another region. Note that it may take some time to update your Zune account.