I have two computers with the same installation of Qlik Sense Desktop version June 2018 (qliksensedesktop: 12.26.1) that work correctly.
The problem occurs in only one of them, which is that it does not allow exporting data to Excel from a table-type object.
When executing the sequence: right mouse button + export + export data
shows the error: "Error general al escribir en xlsx." in english "General error when writing to xlsx."
If something similar has happened to someone and you have managed to solve it, I would appreciate your help.