On a clean 64-bit Windows 7 machine, I was trying to load 7-Zip from a usb key. The 64-bit version of 7-Zip is available only as an MSI file. Every attempt to install the MSI file by clicking "Install" on its context menu gave me the error message:
"This installation package could not be opened.Verify that the package exists and that you can access it, or contact the application vendor to verify that this is a valid Windows Installer package."
I gave up on the GUI and tried installing from the command line after navigating to the directory containing the MSI. The command was:
"msiexec /i 7z465-x64.msi"
I had put the command prompt in the directory containing the MSI just so I could avoid typing the full path to the MSI, which would have been
"G:\`Free Programs for New Installs\7Zip\64bit\7z938-x64.msi".
This got me thinking that maybe I was dealing with a path-length limitation.
As an experiment, I copied the MSI to the root directory of the usb key and tried the install (using the GUI, not the command line) on another Windows 7 machine. The install completed with no errors.
Seems clear there is a path-length limitation on installing MSI files.
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2 comments:
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Long path tool was always there for me in this type of problem. I've been using it for months now and it is really helpful
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