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SNMP error Session (-3000)-2011



Hello, We're getting the following error message on all of our SNMP sensors after upgrading our Windows 7 probe to the current version of PRTG: Could not create SNMP Session (-3000)-2011

I already tried to restart the PRTG Probe Service with no avail

prtg snmp snmp-error#2011

Created on Jul 19, 2021 9:26:28 AM

Last change on Jul 19, 2021 1:02:19 PM by  Felix Wiesneth [Paessler Support]

1 Reply



Please try to install the latest VC++ addons (https://support.microsoft.com/en-us/topic/the-latest-supported-visual-c-downloads-2647da03-1eea-4433-9aff-95f26a218cc0) in order to make this work again properly. It has worked for some of our customers.

Apart from that, you should upgrade, as Windows 7 is EOL since January 2020 :)

Created on Jul 29, 2021 9:38:16 AM by  Stephan Linke [Paessler Support]

Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.