Bitdefender Total Security Blocks Windows Store

My Bitdefender Total Security installation on a new Dell XPS 18 running Windows 8 appears to be blocking the Windows Store. The Windows Store worked fine prior to the Bitdefender Total Security installation, but fails to download thereafter. I understand that doesn't conclusively prove that Bitdefender is blocking the Store, but given the numerous other failures within Bitdefender, and other Windows services being blocked, I think it is likely that Bitdefender is indeed blocking the Windows Store.

Any suggestions?

Thanks.