Hi @M. Hellingman ,
What's your account? An Exchange account or Microsoft 365 account?
Based on my research, i found that:
If you're using a Microsoft 365, Exchange, Exchange Online, or Outlook.com account, you cannot change the location to which your archived items are moved. The Archive folder is one of Outlook's default system folders and cannot be renamed, moved, or deleted. If you are using a POP or IMAP account such as Gmail, Yahoo, or iCloud, you can change the location of the Archive folder by selecting File > Mailbox Settings > Tools > Set Archive Folder.
More information: Archive in Outlook for Windows.
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