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.

If you're having problems accessing, you can see the status of Microsoft Office Online Services at the Service Health portal.

If you're having problems sending or receiving email, read how to Fix email sync issues.

Last updated: 19 October 2018 issues affecting email messages, attachments, and features


We are aware of an issue where some customers are unable to download files when using Google Chrome.


Use Microsoft Edge or another web browser.

Learn more about how to download files and attachments.


Certain add-ons in the Firefox browser may prevent your Inbox from loading.


Visit Firefox support to learn how to Disable or remove Add-ons.


If you are having issues seeing your email folders, check that they are not "collapsed" in the view. 

There is also an ongoing issue where some folders may no longer be visible in the Folders list.


  1. Select > Folders to expand. folder view

  2. You can find items saved within the missing folders using search. We are aware of the issue and are working on a fix.

Read more about Working with message folders in


Some customers see an error message when they try to sign in with Safari on Mac:

Something went wrong
We can't get that information right now. Please try again later.
cId: 01234567890ABCDEF01234567890ABCDEF
app: Mail
st: 500
reqid: undefined
wsver: undefined
efe: undefined
ebe: undefined
et: ClientError
esrc: Bootstrap
err: TypeError: undefined is not an object (evaluating 'Owa.mail.bootstrapMailModule')


  1. Ensure you have the most recent macOS and Safari updates. For more information on how to update macOS, go to Apple Support.

  2. Use another browser.

If you're still unable to sign in, read How to sign in to or out of

When viewing your sent or saved photos at, it seems like you are unable to delete the files or photos because there is no delete button. Files is another view of your mailbox, where only the attachments are shown, so you cannot delete just the attachment or photo without first deleting the email.

To delete the file or image, you must delete the source email.

For more information, read How to delete files or photos in


If you are having issues sending email, this might be due to validation issues with your Microsoft Account.


  1. Go to to validate your Microsoft Account.

  2. Ensure your Microsoft Account profile is up-to-date and complete. Make sure you accept the Terms Of Use, if requested.

If you're still unable to send or receive email, read how to Fix email sync issues.


Customers are currently unable to update their Microsoft Account names. An error message "Sorry, that name includes a word or phrase we don’t allow." is shown.


Please note that some names may still not be allowed if they contain blocked words or phrases. If you get an error when you enter your name, try a nickname instead. 

For more help, read how to Change the display name on your Microsoft account


Email sent from your connected account shows as being sent on behalf of your Microsoft account.


This is a known issue and will be fixed in a future release. Until then, you can change your From address to be the same as your primary Microsoft account alias.

For more information, read how to fix sends email "on behalf of" my email address.


Cleaning up a large number of duplicate or similar contacts does not work.


This is a known issue and will be fixed in a future release. Until then, you can still clean up contacts, but we recommend cleaning up in batches of fewer than 50 contacts at a time.

For more information, read how to Clean up or remove duplicate contacts in


The last person to be a member of a Family Calendar is unable to unsubscribe or delete the Calendar.


This is a known issue and will be fixed in a future release.


Some users are currently experiencing issues when reading email or composing new email when using Google Chrome with the AdBlock extension. 


  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.

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.


The Outlook client does not currently support using a non Microsoft domain primary alias. For the time being to get the account to work in Outlook you need to change the primary alias to a Microsoft domain account, such as or The Outlook Team is doing work that will enable some supported use of aliases in the near future. We will update this topic as soon as the functionality is available.


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:

Note: If you do not have another alias, click the link on the page to create one "Click Add email and a new alias". Then choose the option "Create a new email address and add it as an alias"

  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, iOS, or Android. If you've already clicked the Accept button in Outlook 2016, you won't be able to re-accept the invitation from another Outlook application. 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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