Press Windows Key + R then type regedit in Run dialog box to open Registry Editor.

If you want to disable PDF file preview in File Explorer preview pane, folow these steps: When you reinstall (or install) Adobe Acrobat Reader DC, the Preview handler as well as thumbnail extractor are registered automatically.

Disable or Enable PDF Preview in File Explorer Preview pane PDF Thumbnails and Previews after installing Adobe Reader DC. You need to clear the thumbnail cache by using Disk Cleanup. Warning: If you’ve selected to disable PDF thumbnails, existing PDF files may still display thumbnail preview from the cache. Click Edit > select Preferences… (or press CTRL+K) Go to “ General”, check the option “ Enable PDF thumbnail previews in Windows Explorer“. Disable or Enable PDF Thumbnails in File Explorer via Adobe Preferences PDF thumbnails can be disabled or enabled through Adobe Reader’s Preferences dialog. Read more: Download Adobe Acrobat Reader DC For Windows 10 How To Fix PDF Thumbnail and Preview Not Showing Up in File ExplorerĪdobe Acrobat Reader includes a preview handler shell extension which generates PDF thumbnails as well as file preview in the Preview pane as well as the thumbnail extractor in File Explorer. In this tutorial, learn how to enable PDF thumbnails and how to fix Preview not showing up in File Explorer, assuming that you are using Adobe PDF Reader. This tutorial will tell you how to disable or enable PDF Preview in File Explorer Preview pane. This might appear even if you have the option “Always show icons, never thumbnails” unticked in the View tab of Folder Options window. If you are unable to open PDF files in Outlook 2010, then you need to make sure that there is a compatible PDF reader/editor installed on your system.In your Windows PC, File Explorer may not show PDF thumbnails, and instead display only the default icon assigned for PDF files. Therefore, you can try to fix these issues and access PDF files via Outlook by following these suggestions:įix 1: Install a Compatible PDF Application Part 2: Unable to Open PDF Files in Outlook 2007/2010/2013/2016: 10 Possible FixesĪs you can see, if you are unable to open PDF in Outlook 2007 (or any other version), then there could be so many reasons behind it. The problem can happen due to any other possible reasons related to a corrupt application or a PDF document.Chances are that the firmware or the Outlook application installed on your system could be outdated.There might not be any compatible application installed on your system to open the downloaded PDF.An anti-malware tool on your system could have blocked the downloading of the PDF file.The PDF document that you are trying to open could be corrupted or damaged.The PDF file might not have been downloaded entirely via Outlook on your system.

Trying to open pdf in preview mode