SurfingBob

I ran into the same issue with office applications, Firefox and Internet Explorer. For the time being I have disabled real time protection for these programs in Settings -> Protection -> Managed Protected Applications. This is not a solution but a workaround until more troubleshooting into the issue has been done.

It's a premium license and not business.

I just repaired the issue on my end. Thought I would share my troubleshooting steps in case it might be useful. This is what I found on my own computer in the mbamservice.log. 03/28/17 " 12:45:38.385" 3274093 167c 1128 ERROR LicenseControllerImpl mb::licensecontrollerimpl::KeystoneImpl::KeystoneCheck "KeystoneImpl.cpp" 144 "Unable to retreive an installation token, unable to check with Keystone. License functions will have to use the last status received." Seems to indicate that while attempting to run the update it tries to check a seperate server for licensing information possibly? It seems to coincide with the fact that updates seem to work while on a trial license. These are the IPs I needed to make sure could communicate outside of our Firewall. Not sure if these servers vary. 34.194.11.179:443 (ec2-34-194-11-179.compute-1.amazonaws.com) 54.172.29.209:443 (ec2-54-172-29-209.compute-1.amazonaws.com) 54.172.184.25 (ec2-54-172-184-25.compute-1.amazonaws.com)