My Contact lists are corrupted.

Hi

Please reply with the following details:

• Whether the issue happens in both Microsoft Edge and Chrome
• Whether the list works if you type the exact contact-list name in the To field
• Whether the issue happens only on Outlook.com in a browser or also in the Outlook app

Please try the steps below:

1) Back up your contacts first 

In Outlook.com, go to People > Manage contacts > Export contacts, then export your contacts as a CSV file before making any changes.

2) Test from a clean browser session 

On one Windows computer, try signing in to Outlook.com from a private or InPrivate browser window, or from a different browser. Then go to People > All contact lists and check whether:

• The contact-list members appear when viewing the list
• The list can be selected when composing a new email

3) Recreate one affected list using full email addresses 

If the members are visible only when you edit the list, copy the members from the edit view and create one small test contact list using full email addresses, not only display names.

4) Use your phone or tablet as a temporary workaround 

Since the issue does not happen there, you may use your phone or tablet to send emails to the affected lists while the web issue is being checked.

Please tell me how it goes. If the problem persists, please don’t hesitate to reply to this thread and I will be happy to help. Have a lovely day!  

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