Wednesday, October 26, 2011

How to suppress the AutoDiscover redirect warning in Outlook 2007/2010/2013

After setting up the SRV record for Autodiscover service, launching Outlook 2010 or Outlook 2013, users may get the following warning.

Allow this website to configure user@domain server settings?

http://<autodiscover url>

Your account was redirected to this website for settings.
You should only allow settings from sources you know and trust.


To solve this problem, an administrator needs to add a registry setting for users.

I will use Group Policy Preferences to deploy the registry setting for users.

1. At DC01, log in as Domain Administrator.
2. Launch "Group Policy Management Console".
3. Right-click the GPO which is assigned to the users using Outlook 2010,  select "Edit".


4. Expand "User Configuration > Preferences > Windows Settings > Registry".
5. Right-click "Registry", select "New > Registry Item".
6. Next to "Action", select "Update".
7. Next to "Hive", select "HKEY_CURRENT_USER".
8. Next to "Key Path", type "Software\Microsoft\Office\14.0\Outlook\Autodiscover\RedirectServers".
9. Next to "Value name", type "<HTTPS server to which Autodiscover can be redirected>".

Remark: The Key path is 14.0 for Outlook 2010 and 15.0 for Outlook 2013.

Example:
imail.contoso.com

10. Next to "Value type", select "Reg_SZ".


11. Click "OK".
12. Close "Group Policy Management Editor" and "Group Policy Management Console".

After assigned the GPO, launching Outlook 2010, users don't get the warning.

Remark: If your environment is more than 1 Autodiscover record, you have to add each one.

Reference:
How to suppress the AutoDiscover redirect warning in Outlook 2010 and Outlook 2013

You cannot suppress the Autodiscover redirect warning in Outlook 2007
http://support.microsoft.com/kb/956528

This posting is provided "AS IS" with no warranties, and confers no rights!

8 comments:

  1. Great article. I would like to point out one error. The screenshot provided has the path HKCU\Microsoft\Office\14.0\Outlook\Autodiscover\RedirectServers, but in step 8. of your process you have omitted the "Outlook" entry in your path. I copy and pasted and it did not work. The correct path should be Microsoft\Office\14.0\Outlook\Autodiscover\RedirectServers.

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  2. Thank you.
    I have updated the contents.

    ReplyDelete
  3. Hello, I know this is an old article but I appreciate it.

    I'm wondering, can I add this reg key for all users? If I add this reg key for Outlook 2010 and 2013 for all users even ones that don't use that version, will it cause any problems?

    Thanks

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    Replies
    1. Hi,

      The registry paths of Outlook 2010 and Outlook 2013 are different. I don't suggest applying both registry paths to workstations.

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  4. how can you manually trigger the pop up to make sure that they reg key is working?

    ReplyDelete
    Replies
    1. After adding a srv record and new mailbox user, when a mailbox user launch outlook 2010 or 2013, the pop-up will be trigger.

      Delete