Acrobat X Standard "Not Responding" After PDFs Open

[RFTorqued]

I have tried repairing Acrobat X Standard using Windows Vista's Settings; Control Panel; Settings and Features and selecting Acrobat X Standard; Change; Repair.  After I restarted, nothing had changed.  I logged into support and found that chat (24/7) also was not responding.

[YatharthS]

Hi RFTorqued ,

Please provide the exact dot version of the software & OS installed at your system .Also check whether is there any update available for the software after going through "help > check for updates "

Follow this thread to reset the preferences for the Acrobat software :- How to reset Preference settings in Acrobat.

Please elaborate at what time this message appears while working with the application.

Also try to check with the different user account to replicate the issue :-  https://helpx.adobe.com/x-productkb/global/create-local-administrator-account-windows.html

Regards,

Yatharth