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PDF preview in Outlook is unable to display pdf attachment. PDF preview is displayed both in Explorer (via Powertoys) and Outlook 2016 (via PDF-XChange PDF Preview Provider). If i unchecked Adobe for pdf the next time i try and preview a PDF it will ask me to enable the pdf viewer installed. Activate PDF preview in Powertoys file explorer add-ons. Like its not even recognizing i have excel installed. A report will pop up in your browser look for the Office product key in the “Manage all your software licenses” portion of the page. And if i unchecked the previewer in outlook options trust center trust center settings attachment handling it wont even prompt me to allow it. If you don’t have your product key handy, run Belarc Advisor-one of three free, crucial tools that can reveal your PC’s deepest secrets-before you uninstall Office. (Booting up the Word 2016 Preview on kicks up a message saying it’ll be valid for 179 more days, for what it’s worth.) Ive tried all the solutions found on internet, including registry fixes (even if all my. Looking online, Ive seen that this is a relatively common problem. I cannot get Excel docs to preview in File Explorer (no problem with all other Office documents and PDFs). Uninstalling your existing Office software is as easy as diving into Control Panel > Programs > Uninstall a program and eradicating the Office programs, but wait! You’ll want to jot down your current Office version’s product key first so you can reinstall your current version of Office when the Office 2016 Preview ends. Brand new laptop with freshly installed Office 2016 (Windows 10 version 1903). Just like the official Office releases, the Office 2016 Preview doesn’t play nice with its siblings. Before you actually install the Office 2016 Preview, you’ll have to remove any existing Office installations from your PC.