Endpoint Security PSANHOST.EXE service crashes after Sleep, Suspension, or Hibernation state

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Endpoint Security main protection service PSANHost.exe crashes when the computer recovers from Sleep, Suspension, or Hibernation state.

Affected protection versions:

To see your Advanced product version, see this article.

A hotfix is available to resolve this issue.
To apply the hotfix on the affected endpoint:

Download and save this hotfix file to the endpoint: hf-wgua6948-psanmodadiag.exe
Double-click the downloaded file. The hotfix does not require a restart of the endpoint.
However, under certain circumstances, you may be prompted to restart the hotfix to be fully applied. If you cannot restart the computer right away, select No when prompted.

Note: To install the unattended or silent version of the hotfix, click here. The hotfix is applied after the next system restart.

The hotfix updates the following files:

File name	Location	File Version	Modified Date	Hotfix to be included in future versions?
PSANModADiag.dll	C:\Program Files (x86)\Panda Security\WAC\PSANModADiag.dll	4.0.22.3	January 7th, 2026	Yes

To verify that the hotfix was successful, check the file version in the File Details section, or verify these values in the Windows Registry:

32 bits Architecture		64 bits Architecture
Registry Key	Value	Registry Key	Value
HKEY_LOCAL_MACHINE\SOFTWARE \Panda Software\Setup\Hotfix history\HF_PSANModADiag	Revision [REG_DWORD] 1	HKEY_LOCAL_MACHINE\SOFTWARE \WOW6432Node\Panda Software\Setup\Hotfix history\HF_PSANModADiag	Revision [REG_DWORD] 1
HKEY_LOCAL_MACHINE\SOFTWARE \Panda Software\Setup\Hotfix history\HF_PSANModADiag	Result [REG_DWORD] 0 = Success 1 = Not Applied 2 = Error 9 = On Reboot Operation	HKEY_LOCAL_MACHINE\SOFTWARE \WOW6432Node\Panda Software\Setup\Hotfix history\HF_PSANModADiag	Result [REG_DWORD] 0 = Success 1 = Not Applied 2 = Error 9 = On Reboot Operation