Thursday , May 14 2020

Unable to verify account information – Unable to Configure IPhone with Exchange 2013

Unable to configure IPhone with Exchange 2013 ,Error :Unable to verify account information , It was with specific mailboxes , and other mailboxes were able to configure with IPhone without any issues.


Verified Inheritance is enabled for that account

Open ADUC(Active directory users and computers) – Properties of the account – Security – Advanced

(View – Advanced features should be checked in ADUC)


In my case It was enabled as well .

Checking for the IIS logs


Try on your IPhone once and Open the Recent log – Ctrl +f your mailbox

2014-04-24 00:00:04 POST /Autodiscover/ &CorrelationID=<empty>;&cafeReqId=5f91da0e-c3e9-48ec-a360-83d95eccbc0c; 443 – Microsoft+Office/12.0+(Windows+NT+6.1;+Microsoft+Office+Outlook+12.0.4518;+Pro) – 401 0 0 15

It was showing up 401 unauthorized . strange

Opened IIS


Enable Windows Authentication


Do the same process for ( Exchange Back End )  Site – Enable Windows Authentication


IPhone Configured successfully .

About Satheshwaran Manoharan

Satheshwaran Manoharan is an Microsoft Office Server and Services MVP , Publisher of Specialized in Office365 / Microsoft Exchange / Virtualization , Sathesh is an Messaging Expert supporting/Designing/Deploying many medium size businesses to large enterprises when it comes to Corporate messaging and Virtualization Infrastructure

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  1. Hi, I’m not a techy person. I have an exchange email account for office purpose and I cannot autosync it in my iphone 5. Other email accounts got synced but this exchange one won’t. can you help me?

  2. You’ve made my day!
    Thank you, man 🙂

  3. Hello I am trying to set up email on my iphone and have hit one road block after another. recently had a blackberry and went to an iphone when it died.

  4. Wow… you saved my day. it was really helpful for me.
    The wonder was every iphones and android devices are working perfectly except one device.
    Thank you sooo much for sharing this.

  5. You saved my day. this is really helpful for me.

    The wonder is all other apple and android devices are working fine except one device.

    Thank you soo much for sharing this

  6. Thanks 🙂 After spending ages looking for the fault this fixed my problem.

  7. Hi, i read your blog every so often and i also own an identical
    one and that i was just wondering when you get a lot of spam
    remarks? If how can you prevent it, any plugin or everything you can suggest?

    I have a lot lately it’s driving me crazy so any assistance is extremely
    much appreciated.

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