I now encounter weird errors.
I have a bundle project (calling bundle A) that is perfectly working, and now I am working on a bundles that is created again from the bundle A. (calling this new bundle B)
Even though the prerequisite exe has not changed, nor the <ExePackage ...> code, error started to show up in the middle of installing the prerequisite for bundle B.
Error code itself are 0x800702e4, but I do not think the cause is elevation issue. I compared the binaries (using winmerge) and confirmed the exe are same.
Main difference I found in the bundle .log is the path the file is available.
In the bundle A, the path of this prerequisite was located in C:\ProgramData\Package Cache
However, in the bundle B the path of this prerequisite is placed at C:\Users\My.User.Name\AppData\Local\Package Cache
I recall the majority of the time ProgramData was used before. How could this happen? When does WiX determine to use different package locations? Is there a flag in the bundle code I can modify to guarantee the use of ProgramData?
EDIT
Just for the sake of trying, assuming it is elevation problem, I added <ExePackage PerMachine="yes"...> and this problem went away. Now the question becomes why did this work with bundle A?