Changing DCOM Default Impersonation Level causes Explorer to continuously restart

Question

I have an issue where changing the DCOM Default Impersonation Level causes explorer to get stuck in an Explorer crash loop. I'm fairly new to DCOM so please bear with me.

We have an application which uses DCOM and requires changing the Default Properties in dcomcnfg > Component Services > Computers > My Computer. We need to change the Default Authentication level to None and the Default Impersonation Level to Anonymous. If we do this, then log out and back in again, Explorer does not run correctly. It starts, runs for a second then crashes. It then starts up again and repeats. The only way to stop this is go back into dcomcnfg through Task Manager and set back to the previous settings.

I found an article on TechNet which is similar but the solution doesn't seem to be similar:

TechNet: Explorer in constant crash loop after upgrade to 1809

Information

• Windows 10 1803 build 17134.471
• Updated with the latest windows updates
• The machine is part of a domain, though this happens with both domain and local users.
• It's a VM, but I've also seen this with hardware machines.

Windows Event

Faulting application name: explorer.exe, version: 10.0.17134.165, time stamp: 0x4031a9f8 Faulting module name: twinui.dll, version: 10.0.17134.471, time stamp: 0x26e16714 Exception code: 0xc0000409 Fault offset: 0x0000000000087354 Faulting process id: 0x226c Faulting application start time: 0x01d56c69e0e6bf0c Faulting application path: C:\Windows\explorer.exe Faulting module path: C:\Windows\system32\twinui.dll Report Id: f18669a6-7155-44ab-9552-5aa66e87a9d7 Faulting package full name: Faulting package-relative application ID:

If more information is needed let me know.

Thanks.

James.

Addition:

• I've since tested it on a physical machine with the same results on a completely different domain.
• I've created a new Domain user with admin privileges after changing these settings. The new user is also affected.