Submit a ticketCall us

Training ClassThe Orion® Platform Instructor-led Classes

Provided by SolarWinds® Academy, these trainings will introduce users to the Orion Platform and its features, management, and navigation. These courses are suitable for users looking to discover new tips, tricks, and ways to adapt their Orion products to better suit their monitoring needs:
Deploying the Orion Platform
Configuring Orion views, maps, and accounts
Configuring Orion alerts and reports

Reserve your seat.

Home > Success Center > Network Performance Monitor (NPM) > NPM - Knowledgebase Articles > Servers with more than 32 logical CPUs generate an error

Servers with more than 32 logical CPUs generate an error


When a server is configured with more than 32 logical CPUs, the following message displays in the server Event Log:

Unable to read Server Queue performance data from the Server service. 
The first four bytes (DWORD) of the Data section contains the status code, 
the second four bytes contains the IOSB.Status and the next four bytes contains 
the IOSB.Information.


NPM 11.5.2


The 32-bit application cannot query Server Work Queues counters on Windows Server 2008 R2-based servers with more than 32 CPUs. 


See 32-bit application cannot query performance "Server Work Queues" counters on Windows Server 2008 R2-based computer that has more than 32 processors for troubleshooting. (© 2019 Microsoft Corporation, available at, obtained on January 3, 2019.) 


Disclaimer: Please note, any content posted herein is provided as a suggestion or recommendation to you for your internal use. This is not part of the SolarWinds software or documentation that you purchased from SolarWinds, and the information set forth herein may come from third parties. Your organization should internally review and assess to what extent, if any, such custom scripts or recommendations will be incorporated into your environment.  You elect to use third party content at your own risk, and you will be solely responsible for the incorporation of the same, if any.


Last modified