Cannot remove duplicate work account from Windows 11 because there is no Remove or Disconnect button

I am on Win 11 at home. I have a shared mailbox account with a di

Post: I am using Windows 11 with a personal Microsoft account as my primary Windows account. I also have a licensed Microsoft 365 work account:

• Personal account: ******@gmail.com
• Licensed work account: ******@crescantz.com
• Shared mailbox: ******@crescantz.com

The Investor Relations address is configured in Exchange Online as a shared mailbox. I mistakenly attempted to sign into the shared mailbox directly. Windows now shows two entries labeled ******@crescantz.com under:

Settings → Accounts → Your accounts

One entry is my valid licensed work account. The other appears to be a cached identity created when I attempted to use the Investor Relations shared mailbox. Windows displays both entries with the same ******@crescantz.com address, even though one appears to represent the shared-mailbox sign-in.

The duplicate entry has only a Manage button. There is no Remove or Disconnect option.

Additional details:

• The unwanted entry does not appear as a separate account in Word.
• Word shows only my personal Microsoft account.
• The shared mailbox is not connected to OneDrive.
• The unwanted account does not have a Disconnect button under Windows account settings.
• Credential Manager contains several MicrosoftOffice16_Data:OAUTH2 entries, but the entries do not identify which Microsoft account they belong to.
• I do not want to delete those credentials blindly because I need to retain my valid personal and work accounts.
• I understand that the shared mailbox should be accessed through mailbox delegation rather than by signing into it directly.

How can I remove only the cached shared-mailbox identity from Settings → Accounts → Your accounts without removing or disrupting the valid ******@crescantz.com account?Post:

I am using Windows 11 with a personal Microsoft account as my primary Windows account. I also have a licensed Microsoft 365 work account:

• Personal account: ******@gmail.com
• Licensed work account: myname@company.com
• Shared mailbox: ******@company.com

The Investor Relations address is configured in Exchange Online as a shared mailbox. I mistakenly attempted to sign in to the shared mailbox directly. I also made it a shared mailbox after setting it up as a work account. Windows now shows two entries labeled ******@company.com under:

Settings → Accounts → Your accounts

One entry is my valid licensed work account. The other appears to be a cached identity created when I attempted to and changed the Investor Relations to a shared mailbox. Windows displays both entries with the same ******@company.com address, even though one appears to represent the shared mailbox sign-in.

The duplicate entry has only a Manage button. There is no Remove or Disconnect option.

Additional details:

• The unwanted entry does not appear as a separate account in Word.
• Word shows only my personal Microsoft account.
• The shared mailbox is not connected to OneDrive.
• The unwanted account does not have a Disconnect button under Windows account settings.
• Credential Manager contains several MicrosoftOffice16_Data:OAUTH2 entries, but the entries do not identify which Microsoft account they belong to.
• I do not want to delete those credentials blindly because I need to retain my valid personal and work accounts.
• I understand that the shared mailbox should be accessed through mailbox delegation rather than by signing into it directly.

How can I remove only the cached shared mailbox identity from Settings → Accounts → Your accounts without removing or disrupting the valid ******@company.com account?