Fix: Outlook does not support multilingual Unicode data error

Tashreef Shareef
by Tashreef Shareef
Windows & Software Expert
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If you have deleted and reconnected your Microsoft account because the Outlook stopped working you may see the Outlook currently delivers items into Outlook97-2002 data file, which does not support multilingual Unicode data error while trying to establish a connection as reported by the Outlook users in the Microsoft Community forum.

As of yesterday my Office 365 Outlook stopped connecting so deleted account and reconnected. Outlook will not access my Hotmail account giving the following error “Outlook currently delivers items into Outlook97-2002 data file, which does not support multilingual Unicode data”.The laptop is running Windows 10 and is fully up to date. The data file created is correctly an ost. I have linked to the same account on another laptop running Office 365 with no problem.

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Follow the troubleshooting tips in this article to fix the Outlook does not support multilingual Unicode data error in Outlook.

How to fix the multilingual Unicode error in Outlook

1. Create a New Outlook Profile and Data File (.pst)

Create a New Outlook Profile

  1. Launch Outlook and click on File.
  2. Click on Account Settings and select Manage Profiles
  3. Click on Show Profiles in the new dialog box.
  4. Click the Add button.
    outlook does not support multilingual unicode data
  5. Add a name for your profile and click OK.

Create a New Outlook Data File

  1. Launch Outlook client.
  2. Click on New Items  > More Items > Outlook Data File.
    outlook does not support multilingual unicode data
  3. Enter a File Name.
  4. If you want to add a password, check Add Options Password box.
    outlook does not support multilingual unicode data
  5. Click OK. If prompted, enter a password for the file. Click OK again.
  6. Close and relaunch the Outlook client again.
  7. Try to connect your Microsoft Account and check if the error is resolved.

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2. Create a New User Profile

  1. So there are two ways to create a new profile in Windows 10. Using the Microsoft account and without using Microsoft account. Below steps shows how to create a new user profile without needing a Microsoft account.
  2. Click on Start and select Settings.
  3. Click on Accounts.
  4. Click on Family and Other Users.
  5. Click on Add Someone Else to this PC.
    outlook does not support multilingual unicode data
  6. Click on “I don’t have this person’s sign-in information“.
    outlook does not support multilingual unicode data
  7. Click on Add a user without a Microsoft Account.
  8. Enter a User name and then enter a password or leave it blank, it is optional.
  9. Click on Next to create a new profile.
  10. Click the new profile and select “Change account type“.
    outlook does not support multilingual unicode data
  11. Change the account type to Administrator from Standard User.
    outlook does not support multilingual unicode data
  12. Click OK.
  13. Press Windows Key + L.
  14. Now sign in using your newly created Profile.
  15. Launch Outlook and login with your Microsoft account.
  16. Check if you are able to connect to Outlook client without any error.

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