This error showed up over the weekend. It is associated with an update that came out in AVG’s anti-virus software. This update, 271.1.1/2832 (AVG v9.0.814) falsely detects QuickBooks as being infected with a virus.
The workaround to the problem is to set up an AVG exception so that the QuickBooks folder is not scanned.
Details are on a QuickBooks KnowledgeBase page here.
If additional help needed — a walkthrough of the process, for example — give us a call at 1-800-999-9209 or click here.