All cameras periodically disconnect when PdhMonitor error occurs. Need help!

Hello,

I am seeking assistance regarding a recurring issue with my Nx Witness system.

Periodically, all cameras in the system disconnect at the same time and then automatically reconnect to resume recording. Whenever this happens, I see the following warning in the logs:

WARNING nx::monitoring::PdhMonitor(0x203fd8a27c0): Error in PdhGetFormattedCounterValue: 2147485654

This issue occurs several times a day. My system environment is as follows:

• OS: Windows Server 2025
• Symptom: Simultaneous disconnection of all cameras followed by automatic reconnection.

Has anyone encountered this specific PdhMonitor error or resolved a similar issue? I am wondering if this is a known compatibility issue with Windows Server 2025 or if there are specific OS settings I should adjust.

Any advice or troubleshooting tips would be greatly appreciated.

and

I recently upgraded to version 6.1 (2025 compatible) two days ago, but the issue persisted. To resolve this, I even performed a clean reinstall by downgrading to Windows Server 2022 and restored all data.

Despite these efforts, the same error continues to occur, causing all camera recordings to stop and restart repeatedly. I would greatly appreciate it if someone could provide professional assistance or guidance on this matter.

Best regards,