Outlook: PDF Preview Handler Error

Question

Ever since I upgraded to Outlook 2016 my attachment PDF Previewer has stopped working with the message

This file cannot be previewed because of an error with the following previewer:

PDF Preview Handler

To open this file in its own program, double-click it.

I tried these fixes without any luck:

• Reinstalled the latest Adobe Reader.
• Ran this registry fix.
• LAN Settings
• Turning off all previewers and/or enabling PDF Preview Handler.
• Cleaning out the TEMP and Cache folders.

Solution 1

After trying all of the above, a restart did the trick. Doh!

Solution 2

For my user, they had not opened Adobe Reader yet. Opening it and agreeing to all the licensing resolved the issue.

Comments

[Ramhound]

@fixer1234 - I believe the user is suggesting that due to the EULA not being accepted the PDF preview was not working within Outlook

[SilverbackNet]

Of course, if that fixes it, you likely have a broken proxy, a broken DNS, or a broken network stack.

[Jacktose]

Warning that this changes global settings for your computer's network connection, its not specific to Adobe.