![]() ![]() We are running the same Citrix software as you except we are using CU3 on both VDA and PVS 7.15 agents within the Windows 10 build. When this does happen it most often happens. That is most certainly Desktop Window Manager crashing listing the faulting module as dxgi. ![]() The affected vm would then most of the time refuse to reconnect to the users session but the VM itself would be ok so you could still view the users session through the hypervisor console if needed. However were running into an occasional issue where Excel causes the Desktop Window Manager (dwm.exe) to crash. Nothing confirmed yet either way, but we removed the Application Control agent from the PVS build and straight away the disconnections stopped. To solve this problem, you can check for Windows updates. We also used to experience the flashing desktop just prior to the DWM failure but this was helped by increasing the amount of video memory allocated to each VM to 128MB's. We are still not sure why the Application Control agent is leaking memory but we have a support call open between Ivanti and FSLogix (which we also use) to see if one is causing the other issues. Some Windows 10 users reported that Desktop Window Manager stopped working and closed without further warning. This caused the page file to fill to its maximum file size and then DWM would crash as it ran out of resources. We have experienced this issue with Windows 10 but our issue was caused by a memory leak from Ivanti Application Control programme. In the assembly instruction at dwmcore!MilInstrumentationHandleFailure 5c530 in C:\Windows\System32\dwmcore.dll from Microsoft Corporation has caused an unknown exception (0xc00001ad) on thread 4 ![]() PVS using write cache 512MB non-persistantĭesktops : OS Windows 2016 with ServerVDI option(DesktopOS vda) 2 cpu and 4GB RAM I can't reproduce the issue at will but it tends to occur a few days after using the virtual desktop and most of the time when browsing the web.Ĭomponents: XenDesktop 7.15 cu2, PVS 7.15 CU3, VDA 7.15 CU2(Also tested with VDA 18.11) The only similar issue I saw online was a black screen during login. Restart the computer, as it will terminate the process and bring down the high memory of Desktop Windows Manager to normal levels. I was able to capture the dwm.exe dmp file but it didn't really give me too much information. Sometimes the desktop will recover but other times it will require a reboot. This issue occurs with multiple endpoints. The desktop was gone, almost as if it was fresh windows restart (btw, Im the only user of this computer). And it logged in With my windows credentials, in my account - with my photo on it. When this occurs the screens go completely black or flicker black. After booting, I had to wait for a long time. Everything works great for a few days but after about a week the dwm.exe process crashes and calls out dwmcore.dll. I am in the process of testing Windows 2016 with the ServerVDI option. ![]()
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