1 Update Adobe Acrobat Reader DC manually. Visit the official website and look for the latest patch version. Download updates manually and then double-click to Onthe Find toolbar, select the ellipsis, and then select Advanced Search. Search appears as a separate window that you can move, resize, minimize, or arrange partially or completely behind the PDF window. Note: To arrange the Search and Acrobat window side by side, select Arrange Windows. Whatcauses Adobe Reader not to Work in Windows 10? In addition to Windows Updates being the primary reason, there are also several other reasons why your Adobe Reader might not work properly Ifonly Adobe Reader is having trouble printing, you can try repairing the app. It has a built-in repair tool. Open Adobe Reader. Go to Help>Repair Installation. Allow the app to repair itself and try printing from it. 4. Use a 3 Install the fix for Adobe Acrobat. According to users, Adobe Acrobat isn’t showing thumbnails for PDF files on Windows 10, and in order to fix this issue, many users are suggesting installing a fix for it. Supposedly this third-party fix fixes the problem on 64-bit versions of Windows 10 with Adobe Acrobat X, so be sure that you have a try. Systemrequirements. Make sure that your system meets the minimum system requirements. Note: If you're running Windows 7 or 8, you can install Reader X or later. If you're running Windows 10, you can Resetthe Adobe Reader's preferences once and reboot the machine, to reset the Preferences, refer to the steps from the article How to reset Acrobat Preference settings to default. Navigate to Edit>Preferences>Security (Enhanced)>Disable Enable protected mode at startup>Click OK. Close Adobe Reader and try printing the PDF again. 1 Close Background Processes and Give Adobe a Fresh Start. Many processes continue to run in the background even after we close the program. It means Testingabove solution worked for several computers; above solution being that of paulc96501926 from Nov 7, 2017 12:56 PM. Open Task manager, kill all services/applications related to adobe and MS Office. Open "Programs & Features" (Run: appwiz.cpl) Select Micosoft Offic - click change, then Repair. Don't reboot. Ihave 64-bit Windows 10 with 32-bit Office 2016 installed. The 32-bit reader worked fine on this machine for years. But after an automatic upgrade to 64-bit reader, the PDF preview in Outlook no longer works, says there is no PDF previewer installed. Inspection of Outlook settings confirms no PDF 0Raegi.