Multiple 404 errors on widgets

Hi We’ve upgraded our application to Mx 8.18.5. But now only on 1 environment (production) we are unable to load the application because of 404 errors. We deploying it on a windows server behind IIS. The application is working currently: local/test / preprod environment. And when we bypassing IIS it also seems to work. Before we removing all widgets and replace them does anyone have any ideas what it might is? Thanks in advanced
1 answers

Finally it had something todo with caching from one of our security tools. It cached the Mendix 6 version still after we’ve upgraded. Clearing that cash solved all our issues. Sorry – it had nothing to do with Mendix.