I'd like to say that the fact that this has even occured, is very poor on behalf of Microsoft and MYOB. Your teams should be working together more to prevent such issues. My business has now been unable to access our MYOB file for in excess of a week.
After receiving the email with the subject line "IMPORTANT; you may be experiencing difficulty logging into AccountRight" we have not been able to access our MYOB file which is on-premise.
we have researched the knoweldge base and support files relevant and have in order;
1. Downloaded and applied the MYOB tool to the MYOB files concerned
2. Tested access to MYOB file - no go
3. Identified the Windows Security Update responsible for the issue at hand and removed it
4. Tested access to MYOB file - still no go
It is apparent that either steps one or three above have assited other users, but no so for us. Your assistance is sought please...
FYI; MYOB 2015.4.1
OS; Win7Pro 64
Brenton