Thanks for your question Pat.  After spending 6 or 8 hours searching for solutions, making adjustments, restarting the computer, attempting the installation, and repeating the cycle over and over, I finally was able to get the software to install successfully. Somewhere along the line I do remember setting the Windows Module Installer to Manual (it seems to me it was disabled). I'm not sure if the last thing I did was responsible for correcting the issue or if it was a combination. However, I am posting what I did just prior to the successful installation because it may help someone else avoid several hours of frustration.  Clear the transaction log: Open command prompt in Administrator mode Type the following:  fsutil resource setautoreset true c:\ [enter] Restart the system Repair the Microsoft windows Installer Open command prompt in Administrator mode Type the following: sfc /SCANNOW [enter] When the system scan completes, type msiexec /unreg [enter] Type msiexec /regserver [enter] Reinstall Acrobat After the above steps, the Acrobat installation ran through to completion. ... View more

Thanks for the suggestion. Unfortunately it didn't work. Here is the full error message... perhaps it will make a difference:      Error 1935. An error occurred during the installation of assembly component {9BAE13A2-E7AF-D6C3-A01F-C8B3B9A1E18E}. HRESULT: 0x80070422. ... View more