Lightroom CC 2015.10 fails to update to CC 2015.12

[TJergel]

I have never had any previous issues updating Lightroom until attempting to update to 2015.12.

I cannot update through Creative Cloud - I tried manually checking for updates.

I tried refreshing the CC desktop app.
I tried signing out and in.I tried removing the OPM.db file.

I removed Lightroom CC 2015.10 and reinstalled it, but then only version 2015 got installed - the very basic and first version.

I cannot install Lightroom CC 2015.12 manually through the installer from the downloads section on the adobe site and that gives me this error EVEN IF I choose "Run as administrator".

I am stumped as to what to do or try next.

I have even tried using Lightroom Help->Updates, but that is grayed out and cannot click on it, even when I was on Lightroom CC 2015.10.

[AmerKapetanovic · Accepted solution]

Close all the Applications.

Open the location mentioned below

C:\Program Files(x86)\Common Files\Adobe\AAMUpdaterInventory\1.0

There will be a AdobeUpdaterAdminPrefs.dat. Either delete it or open it in notepad and then change the value from 1 to 0. Save it.

Then run the Installer update once again.

[TJergel]

Thank you very much!

After some trial and error I finally got to update Lightroom thanks to your tip!

[AmerKapetanovic]

You are most welcome. I am glad it worked for you!