Frustration in getting LaunchCondition to wok correctly
Have two searches: file & registry creating FILEEXISTS and REGISTRYEXISTS if the values are found In LaunchCondition Table I have condition: (Not FILEEXISTS) And (Not REGISTRYEXISTS) I need to abort the install ONLY if both items are present. the log file clearly shows that only one of these properties are set. The install always aborts if only one of the searches are found. Also tried setting properties with same results
I think you have the logic reversed here; in order for the installation to continue, the launch condition must be true. Thus you probably want a condition like this: Not (FILEEXISTS And REGISTRYEXISTS) Note that it's typically a good idea to avoid preventing maintenance or uninstallation by adding Installed Or ... to the front of the condition.
MichaelU's condition should have worked. I tried it in a MSI install, and was able to confirm that. Otherwise, you can try the following condition, which is longer than MichaelU's answer. (Not FILEEXISTS) OR (Not REGISTRYEXISTS)
