Hello
Thank you for your question and reaching out. I can understand you are having issues related to ASP .NET application hangs .
- Please disable any Antivirus program or Windows firewall you may have for temporary purpose.
- Please check IIS Storage Pool and try to Increase its time out limits and resources.
- Please check event logs and your Applications debug logs for advanced troubleshooting.
- As you mentioned it was working earlier hence please try to Uninstall any Windows updates and reboot your Server.
-----------------------------------------------------------------------------------------------------------------------------------------------------------
--If the reply is helpful, please Upvote and Accept as answer--