Hello, so I rolled out IE11 to my company. A small amount of clients failed to load IE11 due to the error "Neutral package installation failed". I search high and low for an answer and there was none or either the suggestions did not work.
I wanted to shared my fix so hopefully I can help save someone from the same frustration I went through.
What I did was installed IE11 on another client. As IE11 installs, I view the IE11_main.log Now, you need to be quick in the next few steps. Catch when the logs show "Installing with the downloaded package. C:\Windows\TEMP\IE145F4.tmp\IE11-neutral.Downloaded.cab", you will need to either copy the new Temp folder or copy the file IE11-neutral.Downloaded.cab to another location that you can get to it later. The reason you have to do it quick is the IE11 installation will delete this Temp file once it's done. The IE temp folder will be name differently, mine just happen to be called IE145F4 but yours will be different.
Now that you have the cab file, install it on any clients that has the "Neutral package installation failed" error.
C:\Windows\System32\dism.exe /online /add-package /packagepath:"C:\<PATH>\IE11-neutral.Downloaded.cab" /norestart
I hope this help whoever is searching endlessly for a solution that Microsoft fails to address.