Hi,
I’d suggest you to uninstall and reinstall Adobe Reader to fix the issue.
Also see: Uninstalling programs: frequently asked questions
Problems uninstalling Adobe Reader
Reinstall the program in administrator mode. Follow these steps:
a. Locate the program icon, right-click and select as “Run as administrator”.
b. When the User Account Control (UAC) message is displayed, do one of the following:
- If you are logged on as a standard user, or if UAC is configured to always require credentials, enter the appropriate administrative credentials, and then click OK.
- If you are logged on as an administrator and UAC is not configured to always require credentials, click “Yes” to start the application.
c. Proceed with the installation.