I would like to suggest you to take help of Recoveryfix OLM to PST Converter Tool to convert single or multiple OLM files into various formats, including PDF, PST, MSG, DOC, DOCX, HTML, MHT, and EML.
Supported Versions:
Windows Operating System: Windows 365, 11, 10, 8.1,8, 7, Vista, 2008, XP, 2002, and 2000 (both 32-bit and 64- bit)
Microsoft Outlook: MS Outlook 97 to MS Outlook 2019 and Office 365