Uninstall Abode Reader 9.1 before?

They have made it a bit difficult, eh?

Fortunately, there is a cleanup tool available from Adobe. It is for uninstalling all programs for CS4 but will definitely work for your version of Acrobat, too!

You can download it by going here

It is a bit tricky, so here are some instructions:

1. Uninstall Acrobat prior to using the CS4 Clean Script.
   • On Windows XP, uninstall via Add/Remove Programs in the Control Panel.
   • On Windows Vista, in the Programs And Features section of the Control Panel, select Uninstall a Program.
2. Unzip the download. The download includes the script as well as a ReadMe file with detailed instructions.
   • On Windows, right click CS4InstallerDatabaseUtility.exe and select Run As Administrator.
     Note: When the Run As Administrator option is not available double click on CS4InstallerDatabaseUtility.exe.
3. Follow the on-screen prompt to complete the script. Once the script completes press Enter to exit.
4. Choose your language by entering e for English or j for Japanese.
   Note: It does not matter if you use lower or upper case letters anywhere in the script.
5. Review the Adobe End-User License Agreement and enter y to Accept or n to Decline. Declining will exit the Adobe CS4 Clean Script.
6. Choose your product to remove by typing the number to the left of the product name and press Enter.
7. To confirm you wish to remove the product type y or type n to proceed back to the installed products list and press Enter.
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8. Restart your system.
9. Now you can proceed with your new installation!
   

I assume you are having issues with Adobe Reader and want to start over. Yes, uninstall the program first and then reinstall.

1. Exit from all applications.
2. Uninstall Acrobat.
3. Search for and delete any .tmp files on your computer.