Outlook Desktop - Archived Mail Visibility Issue

I'm experiencing an issue with my Outlook desktop where it does not show my archived mail. The archived mail is currently stored in my Online Archive. It works perfectly fine when I access the Online Archive through the Outlook Web Access (OWA), but I can't seem to get it to show up on my desktop version of Outlook. I haven't changed any settings recently, and I'm unsure what might be causing the issue.

Skills and experience ideal for this job:
- Proficient in troubleshooting Outlook issues
- Experience with Online Archive in Outlook
- Knowledgeable in syncing issues between OWA and Outlook desktop
- Excellent problem-solving skills

I'm looking for a professional who can resolve this issue swiftly so I can access my archived emails on my desktop.