I have two WLCs (5508 - v7.0.220 and 2106 - v7.0.116) that were NMSP connected to a MSE (v126.96.36.199) according to WCS (188.8.131.52)
The MSE reloaded(Actually a reload command from WCS hung the MSE and it hard to be hard rebooted) and I ran into a NTP issue with the MSE running GMT timezone and WLCs running GMT -8. This was highlighted by the NMSP status testing tool. As a quick solution I changed both WLCs to GMT. The tool now tests all green, but the NMSP status remains Inactive for both WLCs and I have no client or tag information flowing into WCS.
I know it's an odd collection of OS versions but it's all v7 right...:)
Just thought I would post it here that I had the same issue. I fix it by changing the MSE assignment with the Controller. You can find this at Services > Synchronize Services > Controllers. Check the controller, click on "Change MSE Assignment", then uncheck CAS, click Synchronize. Give it a few minutes and then do it again to turn CAS back on. Once I did this NMSP went active and clients started to show on my floor plans.
This is what helped me with this issue. I hope it helps someone else as well.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
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