Hello Colin,
We apologize for the inconvenience caused. Have you installed any program to protect your computer from threats/virus? Please provide a screen-shot (http://avgclick.me/getscreenshot) of the message which tells you to call Microsoft. Did you check for the program "storage.googleapis.com" in the 'control panel' list of installed programs? Thank you.
How do I get rid of this pest that locks up Google browser and tells you to call Microsoft?
cheers
col
Colin, For your info, just in case that you are unaware, you can post the screenshot here in your topic. Click on 'Answer' & then click on the 'Image' [mountain symbol] & follow the instructions.
AVG Guru