
Hi Sreejith,
I have couple of scenarios in which the extension folder is there in local drive and still getting the above warning. So the solution for this issue is as below:
Navigate to this path C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Config or the path where you have .NET framework installed.
Open machine.config file present in the above path and you will have <runtime\> tag inside it.
Kindly change this tag to the below one:
<runtime>
<loadFromRemoteSources enabled="true"/>
</runtime>
Reopen CAST-MS and run the analysis again.