Asp.net_sessionid not the same, resulting in an error in CAPTCHA

Problem:

Today, there is a strange problem, each page requested the Asp.net_sessionid of the cookie is not the same , resulting in a verification code validation error . That is, each request is a new session, we guarantee the verification code in Session[randcode], because the session is different, resulting in the acquisition of Session[randcode] is empty.

you can see the following two requests Asp.net_sessionid not the same .

360 compatible browsers and IE browsers will do this, with Google Chrome or 360 speed browser will not have this problem.

Solution:

Rebuilding Web sites and IIS program pools is not possible;

Cond

Asp.net_sessionid not the same, resulting in an error in CAPTCHA