Hi Sandip,

When user clicks on "Back" button, the page is being served from the
browser's cache. The server does not get a chance to participate. You can
disable page caching on client by adding the required pragma settings in
headers. This should help.

Response.Cache.SetCacheability(HttpCacheability.No Cache);

to prevent the browser from caching the page

Best Regards,
__________________________________________________
Sincerely,
Shirazee

Sharepoint Consulting

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