WAP561 - After 2-3 days the AP will not allow clients to fully authenticate (628911547)

Have a total of 5 APs and every 2-3 days these devices seem to not allow clients to connect. Clients appear to associate but never authenticate. I have opened a case with Cisco (Case number in title) but want to see if anyone else is having this issue and how you may have resolved this.
I received an email from an engineer and one of the options he asked me to change was not even an option on the screen. I have UNTAGGED VLAN selected however MANAGEMENT VLAN is not an option. Below is his email.
Making a bit of reasearch i discovered that maybe you have fallen into a firmware bug.
It should be related to VLAN.
If you go on VLAn and IPv4 setting you should see somewhere the MANAGEMENT VLAN and UNTAGGED VLAN settings.
Both of them should be ENABLED.
On the next fw release this should be fixed because it’s normal to have both disabled, but just to workaround the problem you could try with this settings enabled and see if the “freeze” is not happening again.
Please update me so i can close this case or go on with the process.

The Fix Multicast rate setting can be found on the Wireless - Radio Page. In the advanced settings section. Below the
Transmit Power settings.
Thanks
Eric Moyers .:|:.:|:.
Cisco Small Business US STAC Advanced Support Engineer
Wireless Subject Matter Expert
CCNA, CCNA-Wireless
866-606-1866
Mon - Fri 09:30 - 18:30 (UTC - 05:00)
*Please rate the Post so other will know when an answer has been found.

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WAP561 - After 2-3 days the AP will not allow clients to fully authenticate (628911547)

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