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# citrix-vad
s
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n
I upgraded from 1909 to 20H2 without issues, and we're currently on 1912 LTSR CU3 with PVS.
We were on Trend Micro Apex One at that time, and only recently switched to Defender. I'm also using App Layering.
j
Are you using PVS or MCS? So we use Deep Security for all VDI and Apex One for physical boxes.
n
We're a PVS shop.
👍 1
j
Thanks for the reply. This does help
We are moving away from PVS right now. We are replacing our 1:1 non-persistent desktops with app layered hosted shared desktop servers (2019).
n
Going from PVS to MCS?
j
Yes. So initially we found that PVS and app layering with UEFI bios and / or paravirtual SCSI didn't play well with a BDM, so we were gonna have to re-engineer to use PXE or TFTP. Given the size of our environment that was a bad idea, app layering was only being done on our newly built xenapp boxes and HSD boxes, so we went with MCS and haven't looked back.
We are almost ready to retire PVS for xenapp, but we still have 4400 desktops to replace with HSD, so for now we got this 20H2 boot issue.
We've traditionally been a PVS shop btw, I wouldn't have thought we'd leave it ever tbh
n
Ah, gotcha.
It has to be said, though...
boo
😄 1
j
hahaha 🙂