Hi,
I am getting following error mainly after the update.
# **Could not load file or assembly 'IBM.Data.Informix, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7c307b91aa13d208' or one of its dependencies**
Did you perhaps upgrade your project from Legacy to windows?
Try and install the “IBM.Data.Informix” from the manage packages, upgrade +1 up version and see if it resolves your issue, if not try upgrading +1 up at a time until the last available version.