Hi Kumar Anish,

The error indicates that there was problem at server side… there might be some code in c# which does not work fine when deployed on server… it could be related to permission issue, access issue, database issue etc.

u can login to server and try to browser the web page using http://localhost

or, go to web.config file of deployed application and change its <customerror mode='off'>

this will display the detaield error message about the failure and u can fix the relevant issue

Clear your browser's cache. If there's a problem with the cached version of the page you're viewing, it could be causing HTTP 500 issues.

Delete your browser's cookies. Some 500 Internal Server Error issues can be corrected by deleting the cookies associated with the site you're getting the error on.

A Permissions Error. In most cases, a 500 Internal Server Error is due to an incorrect permission on one or more files or folders. In most of those cases, an incorrect permission on a PHP and CGI script is to blame. These should usually be set at 0775 (-rwxr-xr-x).

Regards,
Justin

Go to IIS manager, doube click to open – on left side root tree select Default Website – in the middle screen you can Authentication icon double click and
enable anonymous user to give the rights to all users.

Hi Kumar Anish,
There are two solutions for that
1. Restart IIS tree
2. (1) Go to task manager, check iis worker process background size.
    (2) If the background size mentioned is more than 80 mb, stop that process.
    (3) Go to IIS manager>application pool>defaultapppool>recycling
    (4) Check fixed number of requests & give 200 below mentioned column. That means iis worker process will automatically restart after 200 clicks.