Just wanted to clarify something. Prior to installing xcpng-winpv-9.1.100.0-Release-x64.zip, I ran Invoke-XenClean.ps1 that came with the package. Is is still true that into order to install (upgrade to) xcpng-winpv-9.1.145.0-Release-x64, I have to run XenClean.exe again and then the new installer? Its just a lot of reboots, resetting static ip addresses etc.

@User-cxs You are probably experiencing this issue. Just a guess because you didn't actually ask a question.

@blueh2o Ooops, sorry - I read your message the wrong way around. You're right, that sounds really weird in your case....

@kruess I can see numerous instances of VM_HOST_INCOMPATIBLE_VERSION in your xensource log. It is difficult to know the exact cause ithout more details. Was the pool master restarted after the patches were applied? Are you trying to start the VM on the master? Are you upgrading directly from XS 7.1.2 to XCP 8.3?

@User-cxs si ici :[image: 1774010356739-c9d11a94-06d8-4a3c-b191-f95b2e2ef6f7-image.jpeg] tu DISABLE le serveur. tu nous confirme que c'est "comme" le probleme que tu constates ? un XOA tout vide en page d'accueil ? tu re ENABLE, et ça reviens ok ? tu n'as pas de probleme réseau / micro coupures / host distant au XOA (ipsec/openvpn?) ? la déco/reco que tu as me fait penser a un simple probleme réseau (si ça reviens tout seul et aucun autre impact...)

@florent I rebuilt my XCP hosting environment (everything is faster and bigger stuffed into one rack).... and this issue is now worse. The main changes to this new setup are 2x40Gb networking, faster NFS NVMe NAS, faster pool servers, more memory, much faster CR destination machine with ZFS. Running XCP 8.3 (March 2026 updates) and XO (master a2e33). Replication is leaving many attached to control domain every day with NBD connection set to 2. Changing it to 1 seems to resolve the issue (no more stuck to control domain).