Adobe Acrobat Error 0:104 Fixed

Here’s what I learned at work today.

PC Configuration and Problem Symptoms
PC with Acrobat and Acrobat Reader both installed; Acrobat older version than Reader. In my case Acrobat 9 and Reader 11.

Employee has PDF form that is supposed to be filled-out automatically in web browser. In my instance it was a deposit form from State Treasurer website. When trying to generate deposit slip with numbers from the website, employee gets this error message:

There is a problem with Adobe Acrobat/Reader.
It is running, please exit and try again. (0:104)

It took three hours but the fix is easy. It is in two parts.

1. Registry Edit
a.Run Regedit as Admin
b.Navigate to HKEY_CLASSES_ROOT\Software\Adobe\Acrobat\Exe
c.Change Key
d.From “C:\Program Files (x86)\Adobe\Acrobat 9.0\Acrobat\Adobe.exe” to “C:\Program Files (x86)\Adobe\Reader11.0\Reader\AdoRD32.exe”

2. Acrobat Reader
a.Open Acrobat Reader
b.Go to Edit > Preferences > Security (Enhanced)
c.Click on Host button
d.Enter website address where form data is coming from (copy and paste from web browser)
e.Click OK

Step 1 changes default only for opening documents in web browser from Acrobat to Acrobat Reader. You do not need to change file associations in Control Panel. Step 2 should get rid of security prompt when opening PDF populated with data in the web browser othwise you may need to refresh the page.