Q: we coud not complete your itunes stores request.unknown error occured(310)

Hey sarin_Abdu,

Thanks for the question. If I understand correctly, you are trying to download apps from the iTunes Store and you receive an error. I would recommend that you read this article, it may be able to help the issue.

If you can’t connect to the iTunes Store - Apple Support

Windows

If you haven't been able to connect to the iTunes Store for more than a day, find out which ports and servers need to be allowed for iTunes Store access, then try the steps below.

• Make sure that you have the latest version of iTunes.
• If the iTunes Store appears empty and only displays the words iTunes Store, resolve conflicts between software that monitors Internet traffic and Apple software.
• Fix any network connectivity issues.
• You might need to configure Windows Firewall to allow iTunes to access the iTunes Store. Follow these steps for Windows XP, Windows Vista, and Windows 7.
• Disable any proxies built-in to Windows. You should avoid proxies because they can cause issues.
• If you see a specific error message, get more help with fixing the issue.

If there's still an issue after you try the steps above, contact your Internet service provider and confirm that these ports and servers are turned on for your network.

Thanks for using Apple Support Communities.
Have a good one