SSRS Report External Image issue

Question

SSRS Report 2016 created and deployed in Windows Server 2012 R2 is working as expected. The same report migrated to Windows Server 2019. After migrated, I am getting report data, but I am not getting Image. Images are called from image api. From the Custom Code I am building the https request. Using HttpWebRequest, request is made. When I checked with Network and Firewall team, they don't see any traffic. Which means, the request is not sent out from my report. At the same time I used curl command to check the api, I got success status code. Also I installed postman and verified the api request, request was successfully sent and received the response. Looking for potential fix and direction for this issue.

Answer 1

Finally, issue is resolved on my own. Just posting this comment might be helpful to someone who faces the similar issue.

In the Windows Server 2019, .net framework 4.7 is the default. .Net Framework 4.6 and above have the CASPOL enabled which is blocking to run the libraries from the SSRS reports server. In the SSRS Report Server update the web.config file with <trust level="Full" /> which will resolve the issue.