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So, disable it and check if anything changes after you restart Acrobat. To provide greater security for users of the Adobe product, the company introduced “protected mode” for running a PDF file in a “sandbox” – a restricted environment where it doesn’t have access to an external PC architecture. The essence of the problem is in the settings. If this isn’t enough, check the Run this program as an administrator option separately or in combination with the version change. Try running the application under different versions of Windows after restarting the PC. Pick Compatibility from the top and check the option Run this program in compatibility mode for: Windows 7.

Right-click on the Adobe executable (AcroRd32.exe or some other file name depending on the version) and pick Properties.ģ. Go to the following default location: C:\Program Files (x86) \Adobe\Acrobat Reader DC\Reader.Ģ. Open Explorer or press Windows + E to launch it on the PC.

Edit the compatibility settings and rights, then check the changes.ġ. Every time Windows ran an update, it probably broke Acrobat and Adobe Reader. Adobe software is connected with many modules and applications in the background, such as default programs. Windows updates and upgrades may affect Acrobat settings and cause incorrect startup. Administrative Settings and Compatibility Changing The latter isn’t suitable for a group of users who used Acrobat Pro DC free since reactivation requires Adobe ID registration.ġ.

Combining multiple files into a single PDF results in a server connection error.īelow, I will help you solve the Adobe Acrobat will not open problem with and without having to reinstall or update Acrobat.

Adobe software requires administrative rights to run the application.

Protected mode in Adobe adds an additional layer of security that blocks operation.

PDF files created using third-party software are questionable or damaged.

Acrobat is outdated, damaged or the installation was damaged.

The majority of the users who reported the problem switched from Windows 7/8 to Windows 10 or after a system update, and pointed out a few more common errors: By the way, this error is a rare problem on Adobe Reader installed on Mac. Most often the errors occur on Windows due to the Center of updates and the growth of the security architecture. How to Fix Adobe Acrobat Not Opening Error? Have you faced the problem of Adobe Acrobat not opening? At various stages of use (particularly after the trial period has expired), Adobe Acrobat may not import files, show the fatal startup errors or not respond to user commands.