This has happened two months in a row now :( - I go to update a RD-VDI collection and one or more of the VM's will fail to update with some cryptic error like "unable to create a differencing disk"

On the hypervisor host where it occured on there's usually an error like this:

Faulting application name: vmms.exe, version: 
10.0.17763.4010, time stamp: 0xd75f7842
Faulting module name: ntdll.dll, version: 10.0.17763.3887, time stamp: 0x494079d6
Exception code: 0xc0000374
Fault offset: 0x00000000000fc1b9
Faulting process id: 0x6640
Faulting application start time: 0x01d9593eac5bfa6d
Faulting application path: C:\Windows\system32\vmms.exe
Faulting module path: C:\Windows\SYSTEM32\ntdll.dll
Report Id: 65ba1030-fbdf-4955-97b1-0b57db0a87e5
Faulting package full name: 
Faulting package-relative application ID: 

This is a cluster of Windows Server 2019 servers on Poweredge R630 with a 2x E5-2620 and 384 gigs of ram each.

Anyone else run into this? Rolling restarts seem to solve it... Microsoft Enterprise support is a total waste of time on this.