Hi folks. I had this same error code but none of the fixes here worked. In case it might help anybody else, this is what I did:
In my case, the computer that the executable was deployed to had originally had Office 2016 installed which was removed and replaced with Office 2007 (because that was IT's solution to our request for a perpetual Excel license). Repair didn't do anything and I could never figure out exactly which Activex component would need to be registered according to the fix stated here, so both those paths wound up being dead ends.
Turns out this fix for a completely different error code held the solution. It appears the Office 2016 uninstall left a particular registry behind and every time LabVIEW tried to find Excel._Application, it was looking for it in the old Excel 2016 location (the 1.9 subkey). After removing the 1.9 subkey from the registry, it worked fine.
