This method will upgrade the associated Win32_Product using the upgrade package provided through PackageLocation and any ...

This method will upgrade the associated Win32_Product using the upgrade package provided through PackageLocation and any command line options that are supplied. The method can return the following values: 0 - Success. 2147549445 - RPC Server Fault Error.  Other - For integer values other than those listed above, refer to the documentation on error codes returned by the Windows Installer API and the Win32 error codes.
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