There is a total number limit of input filters and output filters, we can add about 130 items (input + output).
May I know how to increase the limit ?
I got this issue more than 10 years ago, when I was using windows server 2003 IAS. It also exist in server 2008 R2, I haven't found any document about this limit.
Just searched the forum, found a similar post:
https://social.technet.microsoft.com/Forums/en-US/98a38b7a-caeb-416e-b221-676639e0fd7b/nps-unable-to-add-new-ip-etc-and-save