iDevice Clients Offered A Blank Certificate On Password Change When Connecting To Wireless Using RADIUS Authentication

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We’ve been supporting iDevice clients for a few years now, but recently ran into an issue that even a Cisco TAC call & the ever helpful resources of JAMFNation & MacEnterprise we not able to resolve.

Our users authenticate to the wireless using their AD credentials, after a password change they should be prompted to enter their new password. Once done they should reconnect to the wireless.

Oddly, after a password change the iDevices started to be offered a blank cert such as that below:

BLANK-CERT

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iDevice Mail Error: “Cannot Get Mail. The connection to the server failed” / “The operation couldn’t be completed. (DAErrorDomain error 111.)”

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Infrequently we’ve been seeing the  below error on some iDevices after enrolling into our MDM solution.

“Cannot Get Mail. The connection to the server failed”

Plugging those devices into a computer running iPhone Configuration Utility would reveal the following errors in the logs.

“The operation couldn’t be completed. (DAErrorDomain error 111.)”

Realising we had maybe a more Exchange side issue, we looked at the logs on the Exchange Server we were connecting to.. these logs contained the following errors: Continue reading