When monitoring via WMI I experience an increased usage of memory under Windows 7 or Windows 2008 R2. What can I do?

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Attention: This article is a record of a conversation with the Paessler support team. The information in this conversation is not updated to preserve the historical record. As a result, some of the information or recommendations in this conversation might be out of date.

This article refers to PRTG Network Monitor 7 or later

Avoiding Memory Leaks Caused by the “Win32_Service” WMI Class

On computers which are running Windows Server 2008 R2 or Windows 7 sometimes Windows Management Instrumentation (WMI) leaks a lot of memory. The memory usage continually increases, and the system performance decreases. The leaks occur when an application or a service uses the Win32_Service class frequently.

This issue is caused by some allocated memory that is not freed when using the Win32_Service WMI class.


Nov, 2012 - Permalink

I am encountering this exact same issue, but the hotfix mentioned did not fix it. Currently winmgmt.exe is slowly using more and more virtual memory. On top of hotfix KB98314, we also applied hotfix KB977357.

We are using Windows Server 2008R2. Are there any other potential solutions you guys have come across I could try?

Thank you!


Sep, 2014 - Permalink

Please also try this hotfix to see if it makes a difference. If this doesn't help, then you may have to contact Microsoft to see if they have another solution.


Sep, 2014 - Permalink