This support article provides instruction how to completely delete the Outlook desktop profile, in order to perform a clean setup with your mailbox accounts.
Due to incomplete Microsoft support article solutions, this procedure is necessary to follow, for related issues that occur.
Important: This procedure is data destructive. Backup your Outlook data if you find it necessary.
Solution:
- Close the Outlook desktop app, if it is opened
- From the taskbar, type control panel and select Open

- Select Mail (Microsoft Outlook) > Show Profiles


- Remove all profiles listed

- In File Explorer and using the address bar, go to the following location %LocalAppData%\Microsoft\Outlook , then delete all data within this file directory

- In File Explorer and using the address bar, go to the following location %AppData%\Microsoft\Outlook , then delete all data within this file directory
- Then, in Control Panel, select Credential Manager > Windows Credentials
- Remove all Generic Credentials associated with Microsoft Office, and Microsoft 365
- Open Microsoft Word, and select File > Account
- Sign out of any linked account associated with the Microsoft 365 apps
- Select the Start button, then select Settings > Accounts > Email & accounts
- Confirm the associated email accounts are removed
- Select the Start button, then select Settings > Accounts > Access work or school
- Remove any linked account associated with the Microsoft 365 apps
- Restart your workstation
- Open Microsoft Outlook and setup your mailbox account(s)
Reference:
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