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Windows 7: Adobe Reader 9 won't update

05 Dec 2011   #1

Windows 7 Ultimate x64
Adobe Reader 9 won't update

When I click on the icon to update Adobe Reader 9, I get an error message that says that Windows Installer Service could not be accessed. Error 1601.

I have no idea on what to do to fix this problem.

My System SpecsSystem Spec
05 Dec 2011   #2

Windows 7 Ultimate SP1 64-Bit

You probably need to re-register the Windows Installer Service as this Microsoft article explains.

"Disk Error -- Reserved Error (-1601)" error message when you try to install an Office update

Useful list of error codes here:
My System SpecsSystem Spec
06 Dec 2011   #3

Win 7 64 bit

Error 1601 is a Microsoft error code.

Uninstall Acrobat Reader (via Control Panel, Uninstall software) - reboot, and download the new version of Acrobat Reader - then install.

My System SpecsSystem Spec


 Adobe Reader 9 won't update

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source: Adobe

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