My outlook is using an outlook.com address that is not the same as the email I purchased 365 with

Question

My outlook is using an outlook.com address that is not the same as the email I purchased 365 with

Donald Gaertner 20

When I log into Outlook, it shows an outlook.com email address that I don't use. My license for 365 was purchased using my gmail account. I believe this is causing me other issues, like sending meeting notices from an invalid outlook address. How do I get rid of the outlook.com address that I've never used.

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Answer accepted by question author

John Jefferson Doyon 89,910 Independent Advisor

Hi, @Donald Gaertner

The Gmail address used to purchase Microsoft 365 does not necessarily have to be the same address Outlook.com uses for email and calendar.

Before removing the Outlook.com address, please check this first:

Go to https://account.live.com/names/manage and sign in using the Gmail address associated with your Microsoft 365 subscription.
Do you see both your Gmail address and the unwanted @outlook.com address listed there?
Which one is marked as the primary alias?

Microsoft requires an Outlook/Hotmail/Live/MSN address for Outlook.com email and calendar functionality, so the @outlook.com address may have been created when Outlook.com was first set up. Removing a Microsoft-domain alias can also permanently delete that address.

If your main concern is that meeting invitations are being sent from the @outlook.com address, please let me know which address is currently marked as the primary alias and I can advise on the correct way to change the sending address without affecting the Microsoft 365 subscription.

Click "Add comment" to let me know.

Thanks!

Donald Gaertner 20 Reputation points

2026-10-09T18:09:09.7633333+00:00

My gmail address is marked as primary. I removed the outlook address earlier today when I was trouble shooting. Based on your comment above, I just added it back but my gmail is marked primary.
John Jefferson Doyon 89,910 Reputation points Independent Advisor

2026-10-09T18:12:47.03+00:00

Thank you for letting me know.

Your Gmail address can remain the primary alias. The @outlook.com address is still used by Outlook.com for email and calendar.

So the main issue is the meeting invitations. When you create a new meeting in Outlook.com, which address does it show as the organizer: your Gmail address or the @outlook.com address?

Thanks!
Donald Gaertner 20 Reputation points

2026-10-09T18:20:14.01+00:00

From Outlook, it shows the meeting notice coming from my gmail. From Teams, it shows the message "Your email address *@outlook.com will be used to send meeting invites. This is the one that the receiver had errors when they tried to accept the invite.
John Jefferson Doyon 89,910 Reputation points Independent Advisor

2026-10-09T18:47:40.6033333+00:00

That confirms the issue is with Teams, not Outlook.

Teams is using the @outlook.com address attached to your Microsoft account for meeting invitations. Your Gmail address can be the primary alias, but Teams cannot use it as the sending address for personal meeting invites.

Since you added the @outlook.com address back, please sign out of Teams, sign back in, then create a new test meeting.

If the recipient can accept the new invite, the issue was likely caused by the @outlook.com address being removed earlier.

Let me know how it goes.

Thanks!
Donald Gaertner 20 Reputation points

2026-10-09T19:08:33.14+00:00

The invite from teams comes from what looks to me like a system generated outlook address. The format is ******@outlook.com. My outlook address that I removed and readded is a normal Outlook address that I likely chose when setting up my accounts. I see the system generated address when I log into https://outlook.live.com/mail/ . When I click on my profile picture in the upper right, I see the system generated address. It also shows my gmail. When I click on my gmail, it doesn't change the outlook mailbox from the system generated version. It also continues to show me under the system generated id. If I sign out, then sign back in with my gmail account, I successfully get in but it returns me to the state I describe. The system generated ID is showing in the upper right when I click on my profile and as the mailbox address.
John Jefferson Doyon 89,910 Reputation points Independent Advisor

2026-10-09T19:31:20.9333333+00:00

Thank you for letting me know.

That explains what is happening.

The system-generated @outlook.com address can appear when a Gmail address is set as the primary alias on the Microsoft account.

Since you already have a normal @outlook.com address, go back to the alias page and select "Make primary" beside that normal Outlook address. Leave your Gmail address on the account as an alias.

Changing the primary alias will not cancel or affect your Microsoft 365 subscription.

After changing it, sign out of Outlook.com and Teams, then sign back in and create a new Teams meeting. The normal Outlook address should then be used instead of the system-generated address.

Let me know how it goes.

Thanks!
Donald Gaertner 20 Reputation points

2026-10-14T18:53:00.3133333+00:00

This resolved the issue with the system generated e-mail. Thanks so much for the thoroughness of your explanations Very easy to follow.
John Jefferson Doyon 89,910 Reputation points Independent Advisor

2026-10-15T04:51:15.38+00:00

Glad to assist!

If all is resolved, feel free to mark the answer for this thread. Otherwise, if anything related to this issue is still unresolved, please let me know.

Thanks!

1 additional answer

Your answer

Donald Gaertner 20 Reputation points

2026-10-09T18:09:09.7633333+00:00

My gmail address is marked as primary. I removed the outlook address earlier today when I was trouble shooting. Based on your comment above, I just added it back but my gmail is marked primary.
John Jefferson Doyon 89,910 Reputation points Independent Advisor

2026-10-09T18:12:47.03+00:00

Thank you for letting me know.

Your Gmail address can remain the primary alias. The @outlook.com address is still used by Outlook.com for email and calendar.

So the main issue is the meeting invitations. When you create a new meeting in Outlook.com, which address does it show as the organizer: your Gmail address or the @outlook.com address?

Thanks!
Donald Gaertner 20 Reputation points

2026-10-09T18:20:14.01+00:00

From Outlook, it shows the meeting notice coming from my gmail. From Teams, it shows the message "Your email address *@outlook.com will be used to send meeting invites. This is the one that the receiver had errors when they tried to accept the invite.
John Jefferson Doyon 89,910 Reputation points Independent Advisor

2026-10-09T18:47:40.6033333+00:00

That confirms the issue is with Teams, not Outlook.

Teams is using the @outlook.com address attached to your Microsoft account for meeting invitations. Your Gmail address can be the primary alias, but Teams cannot use it as the sending address for personal meeting invites.

Since you added the @outlook.com address back, please sign out of Teams, sign back in, then create a new test meeting.

If the recipient can accept the new invite, the issue was likely caused by the @outlook.com address being removed earlier.

Let me know how it goes.

Thanks!
Donald Gaertner 20 Reputation points

2026-10-09T19:08:33.14+00:00

The invite from teams comes from what looks to me like a system generated outlook address. The format is ******@outlook.com. My outlook address that I removed and readded is a normal Outlook address that I likely chose when setting up my accounts. I see the system generated address when I log into https://outlook.live.com/mail/ . When I click on my profile picture in the upper right, I see the system generated address. It also shows my gmail. When I click on my gmail, it doesn't change the outlook mailbox from the system generated version. It also continues to show me under the system generated id. If I sign out, then sign back in with my gmail account, I successfully get in but it returns me to the state I describe. The system generated ID is showing in the upper right when I click on my profile and as the mailbox address.
John Jefferson Doyon 89,910 Reputation points Independent Advisor

2026-10-09T19:31:20.9333333+00:00

Thank you for letting me know.

That explains what is happening.

The system-generated @outlook.com address can appear when a Gmail address is set as the primary alias on the Microsoft account.

Since you already have a normal @outlook.com address, go back to the alias page and select "Make primary" beside that normal Outlook address. Leave your Gmail address on the account as an alias.

Changing the primary alias will not cancel or affect your Microsoft 365 subscription.

After changing it, sign out of Outlook.com and Teams, then sign back in and create a new Teams meeting. The normal Outlook address should then be used instead of the system-generated address.

Let me know how it goes.

Thanks!
Donald Gaertner 20 Reputation points

2026-10-14T18:53:00.3133333+00:00

This resolved the issue with the system generated e-mail. Thanks so much for the thoroughness of your explanations Very easy to follow.
John Jefferson Doyon 89,910 Reputation points Independent Advisor

2026-10-15T04:51:15.38+00:00

Glad to assist!

If all is resolved, feel free to mark the answer for this thread. Otherwise, if anything related to this issue is still unresolved, please let me know.

Thanks!

Answer 1

The system-generated @outlook.com address can appear when a Gmail address is set as the primary alias on the Microsoft account.

Since you already have a normal @outlook.com address, go back to the alias page and select "Make primary" beside that normal Outlook address. Leave your Gmail address on the account as an alias.

Changing the primary alias will not cancel or affect your Microsoft 365 subscription.

After changing it, sign out of Outlook.com and Teams, then sign back in and create a new Teams meeting. The normal Outlook address should then be used instead of the system-generated address.