Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

Session loss; IIS 7

Posted on 2013-06-04
1
Medium Priority
?
316 Views
Last Modified: 2013-07-01
I am having issues with session loss.  This is on a Windows 2008 r2 server with iis 7.5.  The sessions are stored 'in-proc'.

I can't reproduce the problem on demand, but it seems to occur for about 30 minutes to an hour around the same time of day when it happens (doesn't happen on the same days).  When the problem happens, the sessions can be lost in a few seconds to several minutes.

In the past I had session loss problems, but this was related to the app pool being recycled.  I fixed this issue by changing the recycling settings in IIS (I have not changed the default value in web.config).  I don't believe this problem is caused the the app pool recycling, because when the issue begins, i open task manager on the server and watch the worker process.  The PID never changes and the cpu / memory use stays within a reasonable range.

I thought the issue might be related to the anti-virus software, but the scheduled scan time is not during the time when i typically see this problem occurring.

I also checked to make sure the web.config, files in the app folders are not being changed by someone.  I check the date modified value on those files and those times don't coincide with the session loss.

Any ideas?
0
Comment
Question by:jbodager
1 Comment
 
LVL 1

Accepted Solution

by:
jbodager earned 0 total points
ID: 39290920
This link (http://blogs.msdn.com/b/tess/archive/2006/08/02/asp-net-case-study-lost-session-variables-and-appdomain-recycles.aspx) had two suggestions that helped me solve the problem:

1) using the performance monitor to check the application restart counter.
2) use health monitoring events to log application restarts.

After setting up the logging, I found out that the cause of the issue was an application that was creating / deleting folders on the website.  I did not realize that creating / deleting any sub-directories would cause this issue.  I thought it was only related to the ASP .NET folders.  So the fix I used was:

http://dot-net-web-developer-bristol.blogspot.com/2010/04/disabling-file-change-notification-fcn.html
0

Featured Post

Become an Android App Developer

Ready to kick start your career in 2018? Learn how to build an Android app in January’s Course of the Month and open the door to new opportunities.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

What is an ISAPI filter?   •      It's an assembly (.dll file) that can add or change the way IIS works.   •      They can be enabled globally for your web server or on a site-by-site basis.   When the IIS server receives a request, enabling the ISAPI fi…
If you are a web developer, you would be aware of the <iframe> tag in HTML. The <iframe> stands for inline frame and is used to embed another document within the current HTML document. The embedded document could be even another website.
In a question here at Experts Exchange (https://www.experts-exchange.com/questions/29062564/Adobe-acrobat-reader-DC.html), a member asked how to create a signature in Adobe Acrobat Reader DC (the free Reader product, not the paid, full Acrobat produ…
Whether it be Exchange Server Crash Issues, Dirty Shutdown Errors or Failed to mount error, Stellar Phoenix Mailbox Exchange Recovery has always got your back. With the help of its easy to understand user interface and 3 simple steps recovery proced…
Suggested Courses

580 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question