I am getting the warning when i am trying to add addin in arcmap 10.6. I have written the code for ArcGIS 10.6.1 and trying to run in 10.7.1. I just change the target version in the config.esriaddinx file:
<Target name="Desktop" version="10.6" />
<Target name="Desktop" version="10.7" />
Addin is working fine in 10.7.1 but when i am trying to add addin in 10.6.1 i am getting the warning "Unable to find a matching arcgis installation on this machine" .
Any help/suggestion will be highly appreciated.