When I attempt to upgrade an app in iTunes for windows, I get an error: "Could not purchase. An unknown error occurred (11111). There was an error in the iTunes Store. Please try again later"
I am running the latest iTunes 10.7.0.21 for Windows 7.
This error occurs if I try to either update the app or if I delete it and attempt to redownload.
I have an iPhone and an iPad. I am unable to update the apps or install the apps from within the App Store on iOS.
I do not have an AOL ID, as is a common issue with this type of error.
From what I can tell, my Apple ID account seems fine. I logged in, changed some information, and ensured my credit card is valid and updated.
I can download new apps just fine. I am unable to update or install apps I have purchased in the past.
It seems this was a server issue. Both iTunes and iOS devices are updating correctly now with no change on my end to either my account nor devices.