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The outlook of the mail software that I used until yesterday can not be used suddenly, and an error appears before starting.
Such a case sometimes happens. This cause is displayed when outlook profile disappears. For outlook mail data, a PST file is generated in the outlook folder under the document. In other words, deleting the pst file in the outlook folder obviously displays an error because it can not be read at startup.
The .pst file deleted accidentally is not returned. It is necessary to set profile again. It is an important data file !!
You will need to reset your e-mail address from the control panel again.
How to reset mail profile (common)