ZMQ unsatiable constraints

[SimonEnsemble]

my student on Windows got the following error when trying to install IJulia. any idea how to fix this? thanks.

[second line]

[stevengj]

I've never seen this before. I would assume that your student's .julia directory is corrupted somehow. Maybe delete it and start over. Restart Julia and run:

julia> rm(raw"C:\Users\shawn\.julia", recursive=true)

pkg> add IJulia

Noe that you get the pkg> prompt by typing ] at the julia> prompt. No need to run build manually, it is automatically run by add.

[fredrikekre]

Likely that it is the registry that is corrupt so should be enough to delete rm(raw"C:\Users\shawn\.julia\registries\General", recursive=true)