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Windows VMs reboot takes at least 20 minutes as soon as Sangfor VM Tools are installed 5

Newbie090326 Lv1Posted 2026-Aug-27 15:08

Hello there,

we are currently experiencing an issue where our VMs take an unusually long time to reboot after installing the VM Tools.

For background, these VMs were migrated from a VMware environment using SCMT.

Interestingly, once the VM Tools are uninstalled, the reboot process returns to normal.

Environment:

Sangfor Version: 6.11.3
VM Tools Version: 2.259.0.2.214.0

Could you please advise if this is a known issue or if there are any recommended troubleshooting steps or configuration changes we should check?

Any help or suggestions would be greatly appreciated.

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We are currently working with Sangfor Support on this. The Fix for the long Restarts was changing back a Registry Value that was originally changed by the Sangfor Migration Agent.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control
WaitToKillServiceTimeout = 5000 (default)

After that we received an Update for the SCMT so the value wont get changed as soon as the Agent is installed on the Server.
Is this answer helpful?
Prosi Lv4Posted 2026-Aug-28 09:50
  
Hi,
Yes. The fact that Sangfor VM Tools services or drivers were added after migration—and reboot times returned to normal as soon as VM Tools was removed—is a strong indicator.
As a troubleshooting step, we may also collect Windows Event Viewer logs, VM Tools logs, and boot/shutdown performance information if necessary.
Newbie090326 Lv1Posted 2026-Sep-01 17:16
  
We are currently working with Sangfor Support on this. The Fix for the long Restarts was changing back a Registry Value that was originally changed by the Sangfor Migration Agent.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control
WaitToKillServiceTimeout = 5000 (default)

After that we received an Update for the SCMT so the value wont get changed as soon as the Agent is installed on the Server.
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