Outlook 2025 Shared Calendar. It's our pleasure to assist you, based on your description, we understand that you can't see shared calendar in outlook desktop app. Typically, if you can access your shared calendar on outlook on the web, the problem is not with your account, the issue may be with your outlook desktop app.

Open a shared contacts list in outlook. Add your holidays calendar through outlook on the web to receive automatic updates when holidays are added or changed.