We have a customer running QB Premier Edition 2016 and for the past year - sporadically - they will get H202 errors and cannot access multi-user functionality - it will run in single mode but not multi. For the first few times after it started happening, we would reboot the server and it seemed to fix it. However, when that didnt work, we did some research and it said to stop the DNS server, start the QBDatabase26 service and restart the DNS and it works. Sometimes we can get for a couple of months and other times it happens a couple of times a week. Is there a permanent fix?