I have this problem that based on the extensive search made on Google, isn't that unusual, however, causes to this problem can be a lot, which makes it harder to trouble shoot.
So I have Cacti installed on a VM through CentOS7, and I have another VM which has Windows 10 installed. I already installed everything succesfully and added both localhost and the Windows 10 machine to be monitored. Other than the fact that I had to force the poll manually in order for the rra files to appear on the proper directory, and the graphs to show, everything was normal.
But now this graphs are only showing nan values, on both local host and Windows 10 machine.
SNMP walk and firewall rules are set up correctly, the community name as well.
I checked this post and tried a few things unsuccesfully:
viewtopic.php?t=15136
I have to be honest, I'm pretty new to Linux and Cacti, so there are some of those trouble shooting steps that I was not able to complete as I could not understand them.
If you guys need me to post screenshots, or check something specifically please let me know.
Im also willing to be guided on a specific trouble shoot step that you'd want me to conduct.
Thank you so much!
PS: Just added a new Windows 10 Host to Cacti, and this is what I get after creating graphs for said host

After starting the poll manually on the server, the graphs show but with nan values
