Hi Vishwajeet,
According to your description, my understanding is that you got an error when you accessed SharePoint site or granted permission.
For the issue, there are some reasons:
- The server does not have enough resources to process the function without timing out.
- If you are sure you have these minimum resources, which you probably do, its time to check HTTP Activation on the web server.
- Permissions
More information, please refer to the link:
http://www.wamurray.com/sharepoint-2013-trouble-reaching-server/
And there is another similar post, please check if it is useful for you:
http://techchucker.wordpress.com/2014/08/26/sorry-were-having-trouble-reaching-the-server/
If this issue still exists, please check the log file to find more information about this error. The path of the log file is: C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\15\LOGS.
Best Regards,
Wendy
Forum Support
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