Believe you have worked directly with one of our technical team to get this resolved.
Sharing the solution here for visibility to others who may find this same installation concern:
As this 1603 code is actually a generic Microsoft error code, it may be caused by any of the following:
Can you try to run the installer as an administrator/elevated privileges
Then can you try the 'Resolution' methods located in the following Microsoft documentation to see if that fixes it?
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