Fixes or workarounds for recent issues on

This article is for If you're using Outlook for Windows, see Fixes or workarounds for recent issues in Outlook for Windows.

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Last updated: January 12, 2018 issues affecting email messages, attachments, and features


Some folders are no longer visible in the Folders list, but you can find items saved within the missing folders using search.


We're aware of the issue and are working on a fix.


Some users are currently experiencing issues when replying to email or composing new email when using Google Chrome with the AdBlock extension. The To, From and Subject fields do not appear.


  1. Use Microsoft Edge or another web browser.

  2. Exclude from the AdBlock settings. At the top right corner of Google Chrome, select AdBlock and then select Don’t run on pages on this domain. Refresh your browser to load again.


When you create or rename a folder, it reverts to the old name or disappears the next time you sign in.


This issue is fixed in the beta. Learn more about the beta


You may see two contact folders available in your Outlook People in both English and your localized language. One of these folders may not sync back to your devices.


Follow these steps to ensure that all your contacts sync:

  1. Ensure your language is set to English. To change it, go to Region and Time Zone settings.

  2. Export your contacts from the folder which is not syncing.

  3. Import your contacts again. The contacts will be automatically imported to the correct folder which is syncing.

  4. Change your language back to your personal preference.


Skype contacts that have been deleted in Skype still appear in People.

Note: You can only delete Skype contacts from within Skype. Read more about how to Create or edit, delete, or restore contacts or contact lists in


This issue is fixed in the beta. Learn more about the beta


If email sync is slow, or you are not able to send or receive emails, this might be due to delays in syncing some connected accounts. We are aware of the issue and a fix will be released soon.


  • The "last update" time may not reflect the last time you received email from your connected account.

  • Disconnecting and reconnecting your connected account may not help syncing.


Use the free Mail for Windows 10 app to send and receive email from your connected account. Read how to Set up email in Mail for Windows 10

If you added a bookmark for your Windows Live Mail, Hotmail, or inbox, your bookmark may soon stop working. Please change your bookmark to

When you try to send an email from a device running iOS 11, you might see this error message: "Cannot Send Mail. The message was rejected by the server." This affects email from, Office 365, or an Exchange Server 2016 running on Windows Server 2016.

To fix the issue, please update to iOS 11.0.1.


Your account status appears next to your account picture and lets your and Skype contacts know whether you are available to chat or have a Skype call. You can change your account status in or Skype, but each time you sign in to, your account status will be reset to Available.


We are working on a fix, but in the meantime you can prevent your status from changing by not signing out of Note that closing your browser is not the same as signing out, and has no effect on your status.

To stay signed in when closing your browser, select the Keep me signed in box at the sign in prompt.

A screenshot of the Keep me signed in check box on the sign in-page

Note: Do not select Keep me signed in if you are using a public or shared computer.

Outlook issues after connecting Outlook to


After connecting to Outlook for Windows (Outlook 2016, 2013, 2010 versions) to your email account, your may experience the following:

  • Your email account name shows up as outlook_[long series of letters and numbers] in the Folder Pane and when composing emails using Outlook for Windows.

  • Recipients will also receive the email from the sender with the outlook_[long series of letters and numbers] format.

  • When recipients reply to the email, the email bounces and you may receive the message “Undeliverable message when you send Internet mail in Outlook.”

This issue only impacts customers using Outlook for Windows. Emails sent via on the web works correctly and emails will be sent with the correct email address.


This issue occurs for users with multiple account aliases. We are actively working on a fix. In the meantime, to fix this issue, please do the following:

  1. Go to and sign in to your account.

  2. Set your email as the primary alias.

  3. In Outlook for Windows, remove and re-add the account. See the steps in this article: Add your account in Outlook for Windows

Last updated: February 8, 2017


If Outlook is connected to a primary account that is also connected to other secondary non-Microsoft accounts (such as Gmail, Yahoo, etc.), when sending an email in Outlook, you are not able to choose the other secondary connected account as the "From" sending account.

If you manually type in the secondary connected account email address in the "From" field, the email is sent as "On behalf of" your primary account.


Outlook supports sending from a secondary connected account for Microsoft owned domains such as,, but has not implemented this functionality for third-party domains.

The Outlook team is listening to your feedback and investigating adding this functionality to future updates. Please vote up the request and add any feedback on UserVoice: Option to make Microsoft Outlook 2016 work with connected. In the meantime, please use the following workaround:


You can also add the secondary connected accounts (Gmail, Yahoo, etc.) in as additional accounts in the Outlook profile.

  1. In Outlook, choose the File tab.

    Screenshot of left section of Outlook ribbon with File selected
  2. Under Account Information, choose Add Account.

    Add Account command in the Backstage view
  3. On the Auto Account Setup page, enter your name, email address, and password, and then choose Next.

    Note: If you receive an error message after choosing Next, double check your email address and password. If both are correct, see the next section.

  4. Choose Finish.

For more information, please see Outlook email setup.

Last updated: May 2, 2017

Currently, you can't use Outlook on Windows to edit calendars that are shared with your account, even if you've reconnected your account to Outlook. We're working to make it possible to edit shared calendars in Outlook 2016 for Windows.

To edit a shared calendar, go online to your own calendar, open Calendar for Windows 10, or use a mobile device. Read how to Add your account to another mail app.

Last updated: May 2, 2017


When you try to accept a shared calendar using your Office 365 for business account in Outlook 2016, you might receive the "Something went wrong" error or your sign-in might fail.


To access the calendar shared with your Office 365 for business account, you’ll need to accept the invitation from Outlook on the web . If you've already clicked the Accept button in Outlook 2016, you won't be able to re-accept the invitation in Outlook on the web. The person who sent you the invitation will need to remove your permissions and then send a new invitation. "Something went wrong" error code 500

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