Session frequently end on unexpected condition, how to fix?

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I have faced with an uncommon situation of session problem in asp.net application.

First, page was authenticated and create some session, it seem to be that server not responses to create them due to page command. so page could not redirect to destination page. This will be occurred just sometime randomly.

Second, if I luckily able to pass logging in to admin page (creating session successful), session frequently lost unusually as it should be.

I've try to search and found many topics discussing that the cause was IIS apppool restarting due to an antivirus scanning. but even I turn off antivirus protection, it still happens.
where should I aim to fix? Any body can help?

please.....

Posted 20-Oct-13 20:50pm

jack_th

Updated 20-Oct-13 20:53pm

v2

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Comments

Nandakishore G N 21-Oct-13 2:56am

have you handled session and timeout in web.config. If not add it and try

jack_th 22-Oct-13 0:46am

I've already try and if i put it to web.config, session.abandon() command would not work.

Nandakishore G N 22-Oct-13 1:01am

Can you paste the code written in web.config. Are you trying to say, that session is not abandoned even after Session.Abandon() is executed and even after session is initialized you are not able to get logged in right?
then paste the code what have you done till now?

jack_th 22-Oct-13 3:42am

Excuse me! please apologize for my fault. I've put sessionstate mode="InProc" cookieless="false" timeout="240"
in web.config and it works without that symptom anymore now. But I exactly got that strange session yesterday. Let me check for what cause of that first, because i forget. Then I will come back to tell you what I'd tried to change my web.config in order to get that strange session.

Nandakishore G N 22-Oct-13 5:00am

if the problem is solved change the status to solved. So that this will help others.

-- Nanda Kishor

jack_th 23-Oct-13 0:32am

After I have tried re-install OS, if it's OK, I will. Thank you so much.

TrushnaK 21-Oct-13 3:06am

are you getting session expire error or else?
Have you checked session timeout of your session.

jack_th 22-Oct-13 0:44am

i didn't check for session timeout. just keep it as default IIS settings. And my sessions have no expire error. Do you have any idea for this?

VICK 21-Oct-13 3:09am

Some time app runs perfectly fine for a long time and some time session getting out even after few seconds,

this usually happend to me when my OS(windows) got corrupted and solved by reinstallation of the OS.

jack_th 22-Oct-13 0:50am

I just got to know that my server couldn't access from outside network (by domain address) this morning. I afraid virus would attacks my server. Do you think it possible?

Nandakishore G N 21-Oct-13 3:19am

inside system.web of web.config add this,

sessionstate cookieless="false" mode="InProc" timeout="15"

and try it.

jack_th 22-Oct-13 1:00am

Thank you, I'm now using that but the symptom is not fixed.

2 solutions

Solution 1

It sounds like you're using an in process session state in a web gardening environment.

When you publish your website to a server, it runs within an application pool. This application pool will have multiple worker processes. Each worker process is ignorant of each of the other worker processes.

So if you're using an in process session state (Or assigning state data to static variables) you're not guaranteed/are unlikely to get the same process with a subsequence request. The next request will have a worker process for which none of the authentication values have been set.

You need to switch to an out of process session state. This means each of the worker processes has access to the same session data. So it doesn't matter which worker process serves the subsequent request.

Read the following article which covers the different state services. I'd suggest using the "StateServer" mode.

ASP.NET Session State Overview[^]

You can easily test this by tuning your application pool to use just worker process. Although I wouldn't suggest this as a solution for a production environment.

Posted 20-Oct-13 21:24pm

Stephen Hewison

Comments

jack_th 22-Oct-13 4:16am

I didn't assign session value to any static variables. More explains, are all apps in local IIS work fine. Session state has no strange symptom as being in online server. VICK, on the above comment has said, that may caused from OS, make me get though of it. How do you think for that? I may need to try re-install or not? Need comments.

Stephen Hewison 22-Oct-13 5:06am

Look at the application pool configuration for your local IIS and for your live server. Check for differences between the configuration.

jack_th 23-Oct-13 0:30am

They are the same at all. Tomorrow, I will try re-install OS. Thank you.

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jack_th · Accepted Answer · 2013-10-23T21:09:00

Solution 2

Re-install OS is the way to solve this.

Posted 23-Oct-13 21:09pm

jack_th

Updated 23-Oct-13 21:10pm

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Session frequently end on unexpected condition, how to fix?

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