Fix Log onto Exchange ActiveSync EAS error

How to Fix the Log onto Office 365 & Exchange ActiveSync EAS Outlook error – Something Went Wrong


Typically we see the “Cannot Log onto Exchange ActiveSync mail server (EAS) The server cannot be found” issue when Outlook is trying to connect to an Exchange server or the ‘Something Went Wrong‘ error when Outlook can’t sync with Office 365.

Previous versions of Outlook connect without issue but the degrading of EAS (Exchange ActiveSync) is Microsoft’s way of saying “go to office 365 or we’re going to start breaking things”.

fix outlook 2016 2013 2010 eas error

So, here’s how we fixed the ‘Exchange ActiveSync Mail Server EAS cannot be found’ issue:


Sometimes the simplest fix is the best so try this first:


  1. On the screen where you enter the account details, put in the name of the Exchange Server (it will be for cloud users).
  2. It will give you the EAS error in the dialog box.
  3. Simply hold down ENTER.
  4. It will run through many times and cancel the request then try again etc.
  5. Often times it gets through and lets you finish the setup


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How to Fix Log onto Exchange ActiveSync EAS error if Outlook cannot resolve the server information for your internal Exchange server:


  1. FIRST THINGS FIRST, in order for Outlook to properly connect to your Exchange services please make sure your hosted DNS records are set up in the manner than Outlook wants. Meaning, you want to make sure that you have an A record for and an A record for that points to your mail server’s WAN IP.
  2. On the machine that has the EAS or “Something Went Wrong” error you can try editing the HOSTS file
  3. You may have an issue where the HOSTS file is locked or you get an access denied error when you try to save, so go into the security tab of the ETC folder and give yourself full access by taking ownership (FYI, webroot will lock this file so close or disable it)
  4. Add the following lines to the hosts file, if you don’t know the IP’s then simply ping the WAN IP addresses of your mail server to get them.  The autodiscover A record is the Key for Outlook’s autocomplete settings. Make sure YOUR IP IS FIRST when you edit the host file and save it as follows:How to Fix the Log onto Exchange ActiveSync EAS error
  5. Start a fresh setup of Outlook using the autodiscover features now.  Simply type in your email address and password and it should resolve your account if the records hosted DNS records and/or HOSTS file are setup correctly
  6. If this doesn’t work try connecting from outside of your office and see if you have the same issue if it works externally but not internally see the instructions below about Office 365.  If it doesn’t work in either scenario then there is a higher level issue at play


If you have Outlook 2010 or earlier try following these instructions:


  1. If the auto-connect function doesn’t work, start a new profile setup and choose a manual setup
  2. In the Server field, enter the internal mail server’s name (i.e., ExchangeServ, Mail2016, TSIMAIL, etc.)
  3. Now click on “More Settings” and go to the “Connections” tab
  4. Check the “Connect to Microsoft Exchange using HTTP” box and click “Exchange Proxy Settings
  5. Enter in the top field, and then keep the Connect using SSL checked and then try using choosing NTLM or Basic Authentication (it will depend on your Exchange server’s security settings so try one or the other)
  6. Click OK and then get back to the original window, type in your name and click Next
  7. If it pop’s up asking for a username and password make sure you put in domain\username as the login info and not your email address (unless you’re using Office 365, in which case put in your email address as the username)


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How to Fix Log onto Exchange ActiveSync EAS error if Outlook cannot resolve the server information for Office 365:


fix office 365 outlook eas error

First off, make sure all your hosted DNS records are setup correctly!

In the domain settings section of Office 365 they will tell you what your records should be, follow their instructions to the ‘T’ because not having these will make connecting your devices a giant PITA

For some clients – we have also had situations where their server’s domain name is the same as their email domain, or they removed an Exchange server to go to Office 365, in these cases Outlook may fill in the wrong information because it’s pulling outdated or wrong information from Active Directory.

In these scenario’s the simple fix is set the network adapter’s DNS to and then try and setup the Outlook profile.

By setting the DNS server to an outside source Outlook will now look to Hosted DNS records when it attempts the autodiscover process.  Again, make sure that your Hosted DNS A records for and are setup properly


If you have all the hosted DNS records setup correctly and Outlook still resolve the wrong server, then check the MX Entry in the cPanel of systems like GoDaddy and NetSol and make sure to set the MX Entry to Remote mail exchanger instead of Local mail exchange. 


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If you have Office 365 2 Factor Authentication Turned on try creating an App Password


  1. Login to Office 365
  2. Click on your initials on the top right
  3. Select “Manage Security and Privacy
  4. “Additional Security Verification” options
  5. Create and Manage App Passwords...”
  6. Create an App Password and use that when Outlook asks you for the password upon setup
  7. These App Password instructions may need to be used in conjunction with some of the other instructions on this page as the App Password issue maybe just one of the issues prohibiting your setup


If this is an issue where Outlook 2010 or Outlook 2013 doesn’t recognize your email address or won’t accept your password when connecting to Office 365 then try this:


  1. In Control Panel Click the Mail icon
  2. Click the Show Profiles button.
  3. Click the Add button to create a new profile.
  4. Enter a name for this profile, then click the OK button.
  5. In the Auto Account Setup window, select Manually configure server settings or additional server types then click Next.
  6. In the Choose Service window, select Microsoft Exchange Server or compatible service, then click Next.
  7. Enter the Server as
  8. Enter the User Name as the email address hosted on Office 365.
  9. Click More Settings.
  10. Click the Security tab.
  11. Uncheck the box for Encrypt data between Microsoft Outlook and Microsoft Exchange.
  12. Select Anonymous Authentication from the Logon network security drop-down.
  13. Click the Connection tab.
  14. Check the box for Connect to Microsoft Exchange using HTTP
  15. Click Exchange Proxy Settings…
  16. In the Use this URL to connect to my proxy server for Exchange field enter
  17. Check the box for Only connect to proxy servers that have this principal name on their certificate, then enter in the associated text field.
  18. Check the box for On fast networks, connect using HTTP first then connect using TCP/IP.
  19. Select Basic Authentication from the Use this authentication when connecting to my proxy server for Exchange drop-down.
  20. Click Apply, then Click OK.
  21. Click Apply, then Click OK.
  22. Click Check Name.
  23. An authentication prompt will appear, enter your email address and password when prompted, then click OK.
  24. Click Next.
  25. Click Finish.


Outlook 2016 Something went wrong error fix

If you have Office 365 and you have tried to create a new profile and put in the server address and it still doesn’t work then try this registry fix:


  1. Go to Control Panel and then MAIL and delete all previous profiles (you have to do this to get the Outlook setup wizard to work)
  2. Open up Notepad and copy this in:


<?xml version=”1.0″ encoding=”utf-8″ ?>
<Autodiscover xmlns=”″>
<Response xmlns=””>


Now save the file to your c:\users\username\appdata\local\microsoft\outlook folder as  autodiscover.xml and make sure to save it as ‘All Files’ instead of a TXT file

Open up Regedit and create these entries:

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Note that on the string value you will have to put your email domain and on the data value you will have to put the folder you saved the XML file

Re-open Outlook and see if it works, if it does not please run the ‘Microsoft Support and Recovery‘ tool and see if that provides any more insight into the error.



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  • Adam K
    Posted at 02:16h, 16 August Reply

    It’s actually the verification that fails, once you get past the message it’s fine.

    My tactic is simple and it works. On the screen where you enter the account details, put in the name of the Exchange Server. It will give you the EAS error in the dialog box.

    Simply hold down ENTER.

    It will run through many times and cancel the request then try again etc.

    But you will find that somehow it gets through and lets you complete the wizard.

    • Mark
      Posted at 07:52h, 20 December Reply

      This actually WORKED! Thanks a lot mate

    • Tu Nguyen
      Posted at 02:41h, 06 May Reply

      Damn, it works, the “Hit Enter” methods! You’re a life saving Adam K!

    • Nilton Ca
      Posted at 15:50h, 28 November Reply

      Uau! Can’t believe it! It worked out! Thanks a lot Adam! You’re such a genious! You save my day bro! Muito obrigado!

  • TGD
    Posted at 02:51h, 31 October Reply

    This actually works! Thank you very much for this. I can’t believe that is this simple, I’ve spent days in trying to find the solution.

  • TGD
    Posted at 09:43h, 01 November Reply

    Just to be clear. I meant on ADAM K solution. Holding Enter key worked.

  • Ben C.
    Posted at 10:51h, 12 November Reply

    This worked for me as well after getting EAS server not found error.
    To be clear:
    1. Select New E-mail account
    2. Select “Manual setup or additional server types”
    3. Select “Exchange ActiveSync”
    4. Fill in server settings (note that user name might be in form of DOMAIN\username
    5. Hold Enter key until all boxes go away.

  • Al Smolkin
    Posted at 11:43h, 21 November Reply

    Admin, thanks for the detailed guide to the EAS error.
    Didn’t think to scroll down for the “hit the Enter key” solution, and, I’m glad that I didn’t. :-\

    I’d rather go the long route (maybe it’s the coder in me 😉 )

    • admin
      Posted at 11:47h, 21 November Reply

      Thanks Adam

  • Kam
    Posted at 07:58h, 01 April Reply

    Thanks to Adam K, pressing Enter worked…I was going nuts almost.

  • Alessandro S.
    Posted at 05:37h, 13 July Reply

    “This worked for me as well after getting EAS server not found error.
    To be clear:
    1. Select New E-mail account
    2. Select “Manual setup or additional server types”
    3. Select “Exchange ActiveSync”
    4. Fill in server settings (note that user name might be in form of DOMAIN\username
    5. Hold Enter key until all boxes go away.”

    If you stop process of email 32bit when is on error window, you have already configured (without testing) and when you open Outlook the client works perfectly. 🙂

  • Rabecca Johnson
    Posted at 23:45h, 10 August Reply

    Have any issue related to At&t ??

    • admin
      Posted at 00:57h, 12 August Reply


  • José Escudero
    Posted at 09:45h, 10 October Reply

    uhooooo …and it really works, awsome!

  • JLo
    Posted at 07:50h, 06 December Reply

    After using the “enter-key” solution, i can open the e-mail from outlook (and it works). But i cant make the boxes go away completely from the set-up in “email 32-bit”. If i close the setup my e-mail is removed from outlook. Any solution?

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