AVG disabled itself?

I rebooted my computer and when I returned to it and logged in there was an applet open for Microsoft Support and AVG was disabled.

In the applet window it appeared that someone from Microsoft support had logged into my computer, taken control of it and rebooted it, then typed in a serial number similar to a Windows licence ID.

I have reactivated AVG and I'm running a full system scan now, but has anyone come across anything like this before?  I've kept a screen print of the applet window.

Hello Russell,
It seems you are using AVG Anti-Virus Business Edition. We recommend you to contact our Business team to assist you further.
Use the following link: https://support.avg.com/business_contact_form , fill the form where our business team will check and get back to you via email.