I was working on CSOM in SharePoint 2013 and suddenly when I accessed the site I was getting the following error

Error:

The context has expired and can no longer be used. (Exception from HRESULT: 0x80090317)

This is because the security context of the session might be expired. Please follow the following link to resolve this issue.

http://altaf-pinjari.blogspot.in/2011/04/error-context-has-expired-and-can-no.html


Site started working fine. Very useful.