how to fix error code 3399811147 error tag 7ita9

Question

Error Code 3399811147 and Error Tag 7ita9 appear when I launch outlook classic

Answer 1

Hi @Norm Crisp ,

Follow below steps for same:

1. Close all Microsoft Desktop apps.
2. Clear all saved credentials from "Credential Manager" by following below:

• Open Control Panel → Credential Manager.
• Select Windows Credentials.
• Remove entries related to: MicrosoftOffice, Outlook, Office365, Teams, AzureAD / Microsoft account.

3. Disconnect and reconnect your work account:

• Open Settings → Accounts → Access work or school.
• Select your work account and choose Disconnect.
• Restart the computer.
• Return to the same page and reconnect the account by clicking on "Connect".

4. Launch Outlook Classic.

I hope this resolves your issue.

Answer 2

Hi,

I will work with you on this issue. Typically it correlates to incorrect credentials. I will walk through a few steps with you. Some of these are just to help figure out what is wrong, not to fix it right away. So if nothing changes after a step, that is normal. I will keep going until we solve it.

1. • Open File Explorer and go to C:\Users\<YourUsername>\AppData\Local\Microsoft.

• Open the IdentityCache and OneAuth folders.
• Delete everything inside both folders, but do not delete the folders themselves.

1. • Press Windows + R to launch the Run dialog.

• Type control, then press Enter to open Control Panel.
• Go to User Accounts > Credential Manager.
• Remove any saved credentials associated with your Microsoft account.

I look forward to hearing from you to get the results of the troubleshooting.