We have been having issues where we have 8865 phones registered through MRA locking out Active Directory accounts when a user password changes on the network. If the user does update the password in the 8865 in a timely manner it will continue to try to authenticate through MRA with CUCM. By default the parameters on the EXP E automated detection http proxy authorization failure parameter is 5 failures in 10 minutes locks it out for 10 minutes but then after that timer expires the 8865 proxies through again trying to authenticate. How do you prevent the 8865 trying over and over again when it has an old cached password. We have users that spend time in different parts of the country and may not be able to update their 8865 for 6 months. We are using
If you have a version of CM and Expressway that support activation codes for phone activation I would recommend you to switch to this as it decouples the use of user credentials.