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be96erj's avatar
be96erj
Copper Contributor
Oct 31, 2026

file explorer and pdf previews

Please help! This is driving me insane.   How do I get my PDFs to show up in the preview panel? I have tried everything co-pilot has suggested, but it still doesn't work       I have tried all ...
Application Management
community
configuration
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Jamony's avatar
Jamony
MCT
Nov 04, 2026

Because JPEG previews work, the pane itself is functioning; the remaining question is which PDF preview handler is registered and whether the file is eligible for preview. Changing the default PDF-opening app is not the same as configuring Explorer’s preview handler.

 

Start with a locally created, trusted PDF, since you have already tried unblocking downloaded files. One Microsoft-documented alternative is PowerToys: open its File Explorer add-ons settings and enable PDF preview support, then select the PDF in Explorer with the Preview pane visible. Use the preview setting, not merely PDF thumbnails or the separate Peek feature.

 

Microsoft warns that enabling this handler overrides another installed handler and can affect Outlook PDF previews, so test that too and disable the PowerToys PDF preview setting if it causes a conflict. If even the local test fails, record the exact pane message and installed PDF/PowerToys versions before making further changes.