Use: GetValidDrivesList Installscript function... ... View more

pv7721 is right in asking about the WHYs and WHEREs. Still, GetDiskSpace() Installscript function can easily be used. Windows APIs can also be invoked in a multitude of ways ... View more

mano.n.s75, I am trying to delete a value from the registry when installing or patching so that the registry count remains at 1. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDLLs The requirement is not clear at all... HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDLLs should not be deleted, and should only be modified if the outcome is known and certain. That is why I asked for further details and gave the poster a function that updates rather than deletes... ... View more

Try using: RegDBSetKeyValueEx Installscript function. But it would be better if you could give some more info about the background of the problem so that a better solution, if any, can be found. ... View more

Run the script from command line: cscript and see the result... ... View more

What is it exactly that you are trying to accomplish? Are you running a Major Upgrade? I am running an installer in Modify (upgrade)after changing the GUID of feature This certainly needs a Major Upgrade. All the Versioned files with higher version are replaced but none of the unversioned files (.aspx) even if they are modified are not replaced. That is normal. Modified unversioned files will never be overwritten. Data insufficient for analysis... ... View more

Glad to hear that you solved your problem. Just a query: Unfortunately the "executing" part is more complicated than I thought. First of all our setup needs to be run as an administrator. Now starting the setup.exe from the setup loader via WinAPI's CreateProcess() function in a small C++ application does not supply a possibility to eventually show a "run as administrator" dialog. At least not without utmost effort. You posted the above lines and I thought you did not know about the manifest. Thanks for your reply, adding this to the manifest solved our problem. This line shows that you already knew about the manifest but needed the extra parameters for PCA. In this case my post is inappropriate. ... View more

If its a Basic MSI, there is nothing better than the log file generated during install. You have to enable logging in the machine if its not already enabled. Learn to live with the logs. If its an Installscript project, write your own log. Find where the install fails etc... ... View more

You have to modify one of the following keys, according to your situation: For 64-bit machine, one of the two keys: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\DisplayVersion HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\DisplayVersion For 32-bit machine: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\DisplayVersion ... View more

I think you need Session.Property("INST_ONE") = strInstanceNames and not Session.Property(strPropName) = strInstanceNames. ... View more

Why can't we run 2 msi files at same time? msiexec.exe needs a mutex(mutual exclusion) for its functioning. This is to avoid avoid the simultaneous use of common resources and race conditions. These conditions may happen during Registry or FileSystem write/read. Can anyone suggest where i can find the basics of Installer's, Patches, Merge modules, Transforms? There is a Windows Installer book by Phil Wilson. This is the best resource for beginners. Forums and Blogs are the other resources. You cannot find all info compiled together at one place as you can for other technologies. Seek help when stuck and help others when they are stuck. ... View more

Use a Win32 exe with a manifest with requireAdministrator attribute. The other options are: asInvoker highestAvailable The manifest is an xml file and can easily be found on the net. There is a wealth of info related to this on the net. Visual Studio offers various ways of including a manifest into the exe. Once this is done, on Vista and later, the shield icon appears on the exe. CreateProcess cannot be used to invoke any exe that needs admin privileges. But if the manifest is included, this can be done. Without the manifest your only choices are: ShellExecute() or ShellExecuteEx() Also, to find if OS is 64-bit you need to use IsWow64Process(). Hope this helps... ... View more

Firstly, Is Maintenance support enabled in the project? Secondly, The old Product Guid should be used in the new project. This coupled with the maintenance support enabled should work fine. ... View more

Introduce a new string variabe and assign it the CLI parameters. Pass this string variable to LaunchApplication. ... View more

There are command line options for logging. You need to invoke the msi file with appropriate command-line flags to create a log. Look at the HELP for msiexec. The registry option is: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Installer Reg_SZ: Logging Value: voicewarmupx ... View more