Unable to Sign In to iTunes
This issue started for me yesterday on my Macbook Pro. The symptoms are as follows: I am unable to "Sign In" to iTunes. I simply get the constant "Accessing iTunes Store ..." displaying at the top of iTunes. [The Apple ID and password is correct - that's not the issue - it works fine on my iPhone]
Also - if I try to update apps and click the "check for updates" button at the bottom of the iTunes window - I get the same behaviour.
After a few minutes, it 'may' pop an error message that says. "We could not complete your iTunes Store request. The network connection was lost. There was an error in the iTunes Store. Please try again later."
I have followed all the support suggestions including checking the firewall, restarting the computer, checking my keychain, etc. All to no avail.
My wife's computer (on the same network) has no problems accessing iTunes, so I'm sure the problem is specific to my setup. She has the same computer and the same setting - BUT she has not updated to 10.8.3 yet. [I can't say for sure, but I did not notice the issue prioer to the 10.8.3 update.]
I'm out of ideas - any help in resolving this would be greatly appreciated.
MacBook Pro, OS X Mountain Lion (10.8.3), 2 GHz Intel Core i7 - 8GB RAM