I am unable to upgrade my SEPM to version 12.1.6 MP4. The setup error says the "The installer integrity check failed. Common causes for this failure include and incomplete download, damaged media, or problems with tth Trusted Root cert. store." Since I'm confident it's not an issue with the first 2, I'm guessing the install is looking for something in the cert store that's not there. Is there a specific cert. that I need to put in our Trusted Root cert. store? If so, which cert. (specifically) and where can I obtain it? Is this a new 'feature' that we have to deal with moving forward? Thanks for the help!
John