If you want to avoid these issues while converting OLM to PST manually, you must try an OLM to PST converter tool such as Stellar Converter for OLM. Further, there is a chance of data corruption and loss. Also, you may experience data inconsistency, sign-in errors, and missing attachments issue. However, converting OLM to PST manually is not an easy task and requires you to invest more time and resources. If you want to transfer your mailbox from Outlook for Mac to Outlook for Windows, you must convert the Outlook for Mac file or OLM to Windows Outlook supported PST (Personal Storage Table) file format. Thus, you cannot import an Outlook for Mac (OLM) file to Windows Outlook.
Outlook for Mac exports mailbox items to OLM file, which isn’t supported by Outlook for Windows. Steps to Export PST from Outlook for Windows.
Method 2: Sync Mac Outlook Mails to Windows Outlook.Method 1: Copy Messages from Outlook Mac to Windows.