We found 1 invalid email address error from Microsoft Teams when attempting to send invite from Teams/

MOIZ ARSHAD 40

I have created user as a contact and have also created guest access via Entra but not sure why I cannot send invite from Teams for meeting. User's image

1 answer

Robin Sheng-MSFT 2,575 Reputation points Microsoft Vendor

2024-08-16T03:15:30.3566667+00:00
Hi @MOIZ ARSHAD

According to your case description, you encountered an invalid email address problem when inviting guest users to a meeting. Please try the following steps:

Check email addresses: Make sure all email addresses entered are correct, with no typos or extra spaces.

Special characters: Some email addresses may contain special characters (such as +) that can cause errors. Try using an email address that does not contain special characters.

Account type: If you are inviting an external or guest user, their account type may not be compatible with Microsoft Teams. Make sure they are using a valid Microsoft account.

Teams web client: Try using the Teams web client, creating a new meeting and testing the invite to see if the issue persists.

Clear cache and cookies: Sometimes browser cache and cookies can cause issues. Try clearing your browser's cache and cookies and then try sending the invite again.

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Robin Sheng-MSFT 2,575 Reputation points Microsoft Vendor

2024-08-19T01:37:34.87+00:00

HI @MOIZ ARSHAD
I am checking the status of this case. Please let us know if you would like further assistance.

Meanwhile, if the reply is helpful to you, please try to mark it as an answer to help others who encounter the same issue and read this thread.

Thank you for your understanding and patience!

Robin Sheng-MSFT 2,575 Reputation points Microsoft Vendor

2024-08-22T01:46:05.31+00:00

Hi @MOIZ ARSHAD
It has been a while, how is everything going? If you have any update about this issue, please feel free to post back.

MOIZ ARSHAD 40 Reputation points

2024-08-22T15:36:23.61+00:00

Hello! issue is still currently ongoing. I was able to resolve it for a single guest. Entra showed only 1 profile of the guest however teams showed 2. I checked on users who were not permanently deleted and then deleted them from entra after I had reinvited them from entra. guest was able to show his upn that matches his email address instead of the @extonmicrosft.com as it would show for external guests. Problem is I have 60 other guests who state invalid email address but only have 1 profile. Outlook works fine when sending meeting. Teams only works when you copy there email instead of typing the guests name.

MOIZ ARSHAD 40 Reputation points

2024-08-22T15:49:43.44+00:00

I have a case with Microsoft and they needed to talk to there internal members in regards for my query. there suggestion was to delete all the guests and re-invite them.

Robin Sheng-MSFT 2,575 Reputation points Microsoft Vendor

2024-08-23T06:06:30.28+00:00

Hi @MOIZ ARSHAD

In our recent test, we encountered the same problem as you when adding a guest user to a meeting, and if you send a meeting invitation at this time, the user will not receive the meeting invitation email. However, if you enter the full email address of the guest user, although it will be displayed as unknown, the user will receive the meeting invitation email. Therefore, this is a temporary solution.

It is recommended that you log in to the Microsoft 365 Admin Center to report the problem.
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We found 1 invalid email address error from Microsoft Teams when attempting to send invite from Teams/

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