Outlook Error message

Creating a new Outlook profile via the following steps

#1 - With Outlook closed open the Control Panel <Mail> app

Where is the Control Panel Mail icon?

https://www.slipstick.com/how-to-outlook/where-...
#2 - Select <Show Profile> --> <Add> --> give the new profile a name
#3 - Configure your email account(s)
#4 - Set the newly created Outlook profile as the default for the next time Outlook is opened otherwise it'll use the old profile

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From the error message, the possible is that some files are corrupted. I suggest you try the following methods to see if it helps:

1. Repair Outlook Data Files (.pst and .ost) using SCANPST.EXE.
   1. C:\Program Files (x86)\Microsoft Office\root\Office16

2. Please try the online repair.

3. Download Microsoft Support and Recovery Assistant for Office 365 and follow the prompts to scan and fix the issue.

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Repair an Outlook data file (.pst) file

1. Exit Outlook and browse to one of the following file locations:
   • Outlook 2019: C:\Program Files (x86)\Microsoft Office\root\Office16
   • Outlook 2016: C:\Program Files (x86)\Microsoft Office\root\Office16
2. Open SCANPST.EXE.
3. Select Browse to select the Outlook Data File (.pst) you want to scan. If you need help locating your Outlook Data File, see Locating the Outlook Data Files.

Note: By default, a new log file is created during the scan. You can choose Options and opt not to have a log created, or you can have the results appended to an existing log file.

4. Choose Start to begin the scan.
5. If the scan finds errors, choose Repair to start the process to fix them
5. 

Note: The scan creates a backup file during the repair process. To change the default name or location of this backup file, in the Enter name of backup file box, enter a new name, or choose Browse to select the file you want to use. You may need to run the tool several times in order to repair your Outlook Data File. In some cases, items may not be recovered if they were permanently deleted or corrupted beyond repair.

6. When the repair is complete, start Outlook with the profile associated with the Outlook Data File you just repaired.

7. Locating the Outlook Data Files

You can check the location of your Outlook Data Files in Outlook.

1. Select File > Account Settings > Account Settings.
2. Select the Data Files tab.
3. All Outlook Data Files (.pst) and Offline Data Files (.ost) are listed along with the name of the account the files are associated with.