Couldyou try following troubleshooting steps: 1- Download and run cleaner tool on the machine to uninstall Acrobat: Download Adobe Reader and Acrobat Cleaner Tool - Adobe Labs. 2- Then download and install Acrobat from here and check: Download and install Acrobat DC subscription. Let us know how it goes.
InDistiller, select an Adobe PDF settings file from the Default Settings pop-up menu. (Optional) Choose Settings > Security and select an encryption level. Open the PostScript file and start the conversion process, using either method: Choose File > Open, select a PostScript file, and click Open. Drag one or more PostScript files from theStepsto make Acrobat Reader or Acrobat your default PDF program: Right-click the thumbnail of a PDF file, and then choose Properties. In the file's Properties dialog box, click Change. Lưu ý: If your computer settings are managed by a system administrator, you may not see the Change button.
Inthe Preferences dialog box under Categories, select Full Screen . Select Show Navigation Bar, then click OK. Select View > Full Screen Mode. The Full Screen navigation bar contains Previous Page , Launchthe software, choose Help > Repair Acrobat Installation, and follow the instructions on the screen. Once the repair process is complete, simply restart your PC and check if the issue is still Clickon Apps. Click on Default apps. Click the "Choose default app by file type" option. Quick tip: You can also use the "Set default by app" option to change the default app to open PDF .