| Event Id | 1321 |
| Source | security |
| Description | The specified user account is not a member of the specified group account. |
| Event Information | According to Microsoft Cause: For instance, a client might have requested that a service delete a user account from a group and the user is not a member of the group. Resolution: You might want to add the user account to the group account before retrying, or you might have used the wrong group name in your request. |
| Reference Links | Event ID 1321 of Source security |
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