**Make a snapshot so you can rollback. Windows can get unstable/unbootable if things go wrong.**
  - Uninstall Citrix ®️ XenServer ®️ Client Tools
  - Reboot
  - Uninstall XenServer PV-Drivers in Device Manager in following order (reboots may be needed & show hidden devices in dev man):\\
    * XenServer PV Network Device (one ore more Devices)
    * XenServer PV Storage Host Adapter
    * XenServer PV Network Class
    * XenServer Interface
    * XenServer PV Bus (c000) (if present)
    * XenServer PV Bus (0002) or XenServer PV Bus (0001)
4. Reboot\\
5. Check that you see this unknown device in Device Manager:\\
6. SCSI-Controller - PCI-Device ID 5853:0002 (If this does not appear, manually remove drivers)\\
7. Unpack ZIP file\\
8. Insert Driver ISO & Start setup.exe\\
9. Follow the install wizard\\
10. Reboot\\
11. Manually install device drivers from the Drivers ISO, reboot as needed.

**Manually removing Xen Drivers:**\\
1. Create a snapshot of the working VM if possible.\\
2. Reboot the VM.\\
3. Uninstall XenTools, guest agent, drivers and all individual drivers msi through Add/Remove programs. (guest agent first, then PV tools, then each individual driver msi in any order).\\
4. Delete system32/drivers/xen*.sys\\
5. Remove xenfilt from the upperfilters registry entries.\\
Note: Check all of them. Example o HKLM\SYSTEM\CurrentControlSet\Control\Class{4d36e96a-e325-11ce-bfc1-00802be10318 o HKLM\SYSTEM\CurrentControlSet\Control\Class\* \\
6.Reboot the VM\\
7. Install XenTools and reboot as many times as needed.\\