I'm experiencing issues with the new Outlook application. Specifically, it won't open any PDF files or show previews for them. The classic version works just fine, but the new one is problematic. I've tried resetting the app, restarting it, uninstalling and reinstalling, clearing the cache, and making Adobe Reader the default PDF viewer. I've also updated to the latest version of Windows (25H2), but none of these steps resolved the issue. Whenever I try to download a PDF, I get a 'something went wrong' error. Has anyone else faced this problem or found a solution?
4 Answers
Previewing works fine in both the PWA version and the Mac version, so maybe there's an issue specific to your installation. Make sure any ad-blocking or telemetry-blocking features are turned off, as they can sometimes interfere with Outlook's functionality.
You could try clearing the Office cache. Here’s a link to a Microsoft guide on how to do that: [Clear the Office cache - Office Add-ins | Microsoft Learn](https://learn.microsoft.com/en-us/office/dev/add-ins/testing/clear-cache). It might help resolve the issue!
It sounds like Microsoft made some changes for security reasons that might be affecting your ability to open PDFs. Have you checked if your version of Outlook is up to date?
Are you saying there’s no fix for this issue now?
I had a similar problem, and here's what worked for me: Close Outlook, open Adobe Acrobat Reader, go to Menu > Preferences > General, and click the 'Select as Default PDF Handler' button. This might re-register the file associations. After this, restart Outlook and check if it works!
We are having this issue on Windows 11.