Well, it turns out we are not the only company experiencing this exact same problem! I have opened a case with Meraki Support on June 27 describing a problem where a growing number of systems had Client Descriptions switch from Device Names to GUID numbers. The original suggestion was that it was caused by mDNS traffic. I disabled mDNS protocol on clients using Group Policy and looked with Wireshark for mDNS queries but that was a dead end while the problem continues. This happens on AD clients with a mix of Windows 10 versions (1803, 1809, 1903) , Windows 7 and even one Vizio TV. It affects now 9 out of 61 clients and growing every few days. Clearly, the bug is with Meraki software and Meraki programmers should trace it ASAP and escalate if necessary. We cannot have portals listing systems which are basically "unidentifiable" by humans. Lets keep this thread open and share any information / updates Meraki provides regarding resolution. ... View more