Dec 07, 2020 02:18 PM|PatriceSc|LINK
If really written as <fulltrustassemblies> in this file, try <fullTrustAssemblies> instead (and make sure sure to change the end tag as well). In tthe machine.config file you should also have a line starting with
<section name="fullTrustAssemblies" type="System.Web.Configuration.FullTrustAssembliesSection, etc...
Seems you had an unwanted changed somewhere in a machine level file (.NET config system is hierarchical ie it is "merging" multiple configuration files so that you can configure stuff from the machine level down to the application folder).