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Seems that the 9.1.146 version still reports 9.1.145-77 to XO. It is listed as the correct version in "Installed programs" within the guest (Windows server 2025).
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@probain Yes, that's expected as there were only changes in the installer and XenClean/XenBootFix, the drivers and guest agent binaries included in 9.1.145 and 9.1.146 are the exact same. As a result, the version information in the guest agent (which does the reporting) was not updated.
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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, in order to install (upgrade to) xcpng-winpv-9.1.145.0-Release-x64, I have to run XenClean.exe again and then run the new installer?
Its just a lot of reboots, resetting static ip addresses etc.
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@archw XenClean is not needed when upgrading; it's only needed when switching tools vendor, or when switching from the old XCP-ng 8.2 tools.
The XCP-ng 9.1 tools installer will block installation and indicate an error whenever XenClean is needed.
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@dinhngtu
You rock - thank you! -
Hello all,
XenClean 9.1.148 Prerelease is now available with a fix for error 1605 during execution.
This is a XenClean-only prerelease.
https://github.com/xcp-ng/win-pv-drivers/releases/tag/v9.1.148
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Hello all,
XenClean/XenBootFix 9.1.152 have been released.
This release fixes VSA-2026-012 (DLL sideloading vulnerability in XenClean and XenBootFix).
If your VM is running 9.1.146, you don't need to update. You just need to replace any XenClean and XenBootFix files you downloaded.
The
package\XenCleanandpackage\XenBootFixdirectories contain fixed versions of the aforementioned tools.package\XenTools-x64.msihas not changed from version 9.1.146, and is only provided as a convenience. The installation MSI does not include the fixed XenBootFix.You must use the one from
package\XenBootFixor download the tool directly from GitHub!The next release of the XCP-ng Windows Guest Tools will contain a fixed version of XenBootFix.
Get it here: https://github.com/xcp-ng/win-pv-drivers/releases
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Hello all,
Version 9.1.200 Release of the Windows PV tools has been released.
Download the latest release here: https://github.com/xcp-ng/win-pv-drivers/releases
It will be integrated into the XCP-ng built-in tools ISO after a test period of 2 weeks.
This release brings bug fixes and improvements to the PV drivers.
Changes since 9.1.146/9.1.152
- Improved: Update XSTDVGA to v0.1.124.1151; add extra resolutions
- Fixed: Better compatibility with Xen block backends with large sector sizes
- Fixed: Fix more network unplug issues
- Improved: Driver optimizations
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abudef said:
I was thinking more of updating the entire set of the agent and drivers, similar to how XenServer VM Tools for Windows have it implemented. Using a scheduled job, they regularly check whether an update is available, and if so, they carry out the update of both the agent and the drivers themselves.
Hi, how’s it looking regarding a possible automatic update?
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@abudef An overhaul of the guest agent is coming. We're considering adding some kind of update notifications as part of that overhaul, but it'll take some time to suss out the details. Autoupdating the Xen drivers is potentially disruptive and I'd prefer avoiding outages arising from an update coming at a bad time.
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