INFORMATICS

Fixed the problem on Windows 11 by simply going to:

Control Panel->Indexing Options->Modify->Unchecked "Microsoft Office Outlook"

Save everything and restart the Outlook.

Now You can search mail box.

How to Convert DBX Files to PST - Easiest free way

This method requires two programs: Windows Live Mail and Office Outlook on the same computer 

This process convert your Outlook Express .dbx file into your Outlook mail files .pst.
1. Open Microsoft Outlook.
2. Open Windows Live Mail.
3. In the Windows Live Mail window, click the File button and select Import Messages then select Microsoft Outlook Express 6.

4. Select Microsoft Exchange as the format and then click Next.

5.After selecting the import type and clicking the Next button from the example above you will be required to browse to the location of the email messages or in the case of Outlook Express 6 the location of the DBX files as shown in the below image. Browse to the location of the DBX files.

6. You will see a message that all email will be exported to Windows Live Mail, click Ok to continue.

7. You can import all email folders or select the appropriate folders that you want to export by using the Select folders option.
8. After you select the appropriate option, click OK and wait for the import process to be completed.
9. When the Import Complete dialog box appears, click Finish.

The document translated automatically
Repair Microsoft Outlook mailbox
When working with Microsoft Outlook mail may damage the database containing the mail.

The file extension is .pst mail - this file contains the whole structure of e-mail, including documents sent and received. It is located in the folder:

C: \ Documents and Settings \ User \ Local Settings \ Application Data \ Outlook

Utility to repair this file is scanpst.exe it is installed when you install Outlook in the following location:

drive: \ Program Files \ Microsoft Office \ OFFICE12.

Error Repair program is being run scanpst.exe and show the location of the mail file.

Before servicing turn off the mail.

The program defaults to a copy of the repaired database and repair ZIP file.