Shell Extension already installed with a different external location

[Florian]

@Ains

I presume this is linked to the issue with windows 11 and the context menu?

It's related to the context menu, but basically says that it's already installed at another folder than you're installing to.

See this post for another very recent occurrence of this issue (and a solution):

Cannot install Shell extension because already installed

Could it be that you installed a 64-bit version over an existing 32-bit version? See here for additional notes on installing the 64-bit version