+1Bonjour,
Je dispose plusieurs machines Windows Server distante.
Je mets en place le modèle OS-Windows-SNMP-Custom. Je récupère bien le ping mais pas le cpu mémoire et swap (UNKNOWN: SNMP Table Request : Timeout)
J’ai autorisé le port UDP 161 entrant et 162 sortant. Le cpu est ok mais la mémoire et le swap reste en UNKNOWN: SNMP Table Request : Timeout
Ce que je comprends pas c’est que certains Serveur distant Windows sont bon 
Best answer by MichaelW
Hello,
I had the same problem only with windows server w2k12 and after.
With option --snmp-force-getnext, memory and swap check are OK.
Hello
The error message “UNKNOWN: SNMP Table Request : Timeout” is most of the time related to a network issue.
You have here a troubleshooting guide to help to understand where the issue can be: https://docs.centreon.com/docs/integrations/plugin-packs/tutorials/troubleshooting-plugins#snmp-checks
Feel free to send us the output of the different commands from the troubleshooting guide to help you :)
+19Regarding Windows specifically, numerous examples of random failures with SNMP check when server is overloaded have been observed:
Adding --snmp-timeout=3 to the command is enough most of the time.
+1Thank you for your feedback, I read your link
I will see to switch back to 2C with --snmp-timeout=3
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