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Article ID: 2802703 - Last Review: September 12, 2013 - Revision: 6.0


After you configure Outlook 2013 or other devices by using an account, you receive the following error message:

There are too many devices syncing with this account. To sync using Outlook, try removing another device that is connected with this account such as a phone or another computer.
You may also receive similar error messages on other devices, such as your smartphone, tablet, or other computers that use Outlook 2013. Microsoft has confirmed this to be a problem between and Microsoft Outlook 2013.


If you subscribe to Microsoft Office 365, a fix for this issue should have been downloaded to your computer automatically.

If you do not subscribe to Microsoft Office 365, this was fixed in the March 12, 2013 hotfix package for Outlook 2013. For more information about how to obtain the hotfix package, click the following article number to view the article in the Microsoft Knowledge Base:
2727079  ( ) Description of the Outlook 2013 update: March 12, 2013

To check which version of Outlook 2013 you're using, follow these steps:
  1. On the File tab, click Office Account.
  2. Click About Outlook.
If you're running version 15.0.4481.1000 or a later version, the hotfix is already incorporated into the software. If you have to install a hotfix package to resolve this issue, we recommend that you download and install the latest hotfix package because updates are cumulative. For more information about how to obtain the latest hotfix package, click the following article number to view the article in the Microsoft Knowledge Base:
2625547  ( ) How to install the latest applicable updates for Microsoft Outlook (US English only)
Note This error may occur for valid reasons, such if you use lots of devices or use a very large number of folders. If you have the fix installed but still experience this problem, complete a form on the following Microsoft website to have Microsoft reset the device sync limit on your Microsoft account:

Outlook 2013 sync error request form (
You will be contacted within 24 hours and will be notified when your account has been reset. This lets you continue to use Outlook 2013 with EAS. However, you might encounter the same problem again if you use many devices or a very large number of folders (typically more than 1,500). For information about Exchange Active Sync (EAS) see the "More Information" section.


If you cannot install the hotfix package for some reason, and you still want to use Outlook 2013 with your existing Microsoft account, you can configure Outlook to use the POP3 protocol instead of the EAS protocol.

Important By using this older protocol, your calendar and contacts will not sync at all and you will have to manually check for new mail.

Configuring your Microsoft account to use different settings

First, remove your existing email account that uses EAS with your Microsoft account:
  1. In Outlook 2013, click Account Settings on the File menu.
  2. Click Account Settings again to display a list of email accounts.
  3. Click the existing email account type that's labeled Exchange ActiveSync, and then click Remove.

Configuring an Outlook 2013 installation that uses POP3 with your Microsoft account
  1. With the same window still open, click New to add the new email account.
  2. Click Manual setup or additional server types, and then click Next.
  3. Click POP or IMAP, and then click Next.
  4. On the Internet POP and IMAP Account Settings screen, type the following setting information:
    1. In the Your Name box, type your name as you want it to be displayed to recipients.
    2. In the Email Address box, type your email address. For example, type
    3. In Account Type, select POP3.
    4. In the Incoming mail server box, type
    5. In the Outgoing mail server (SMTP) box, type
    6. In the User Name box, type your account name. For example, type
    7. In the Password box, type your password.
    8. Select the Remember Password check box if you want to save your password.
    9. Make sure that the Require logon using Secure Password Authentication (SPA) check box is cleared.
    10. Click More Settings.
    11. Click the Outgoing Server tab, and then select the My outgoing server (SMTP) requires authentication check box.
    12. Click the Advanced tab, and then select the This server requires an encrypted connection (SSL) check box under Incoming Server (POP3).

      Note The Incoming Server (POP3) box should be set to port 995.
    13. Select TLS for the Use the following type of encrypted connection under Outgoing server (SMTP) setting.

      Note The Outgoing Server (SMTP) box should be set to port 25. If port 25 is blocked on the network or by your ISP, you can set SMTP port to 587.
    14. Under the Delivery section, clear the Remove from server after 14 days check box, and then click OK.
  5. On the right side of the POP and IMAP Account Settings screen, click Test Account Settings.

    If you do not receive an error message, your email account is set up correctly. Go to step 6.

    If you receive an error message, make sure that you have entered all the information correctly, and then click Test Account Settings again.
  6. Click Next, and then click Finish.

For more information about how to set up a POP3 or IMAP connection, see Set up email in Outlook 2010 or Outlook 2013 ( .

More information

By default, Outlook 2013 uses a protocol that's named Exchange Active Sync (EAS) to connect to accounts. If you receive the error message that's mentioned in the "Symptoms" section, you may receive similar error messages when you try to access your email account from other devices, such as other computers or mobile phones. This is why you must request a device reset by using the hyperlink in the "Resolution" section. As soon as the device sync settings are reset in your Microsoft account, you can regain access to your accounts on those other devices.

Applies to
  • Microsoft Outlook 2013
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