IIS stops responding, server needs to be restarted

We have a webserver running Windows 2003 SP2.

After a memory upgrade(2gb to 4gb), IIS stops responding and the only way to get it back is to restart the server.

Some errors on event viewer:

Reporting queued error: faulting application w3wp.exe, version 6.0.3790.3959, faulting module w3core.dll, version 6.0.3790.4616, fault address 0x00004e2e.
EventID 1004

A process serving application pool 'AppPool Site CCE' terminated unexpectedly. The process id was '5004'. The process exit code was '0xc0000005'.

A process serving application pool 'AppPool Site CCE' terminated unexpectedly. The process id was '3728'. The process exit code was '0x1'.

After restarting the server, during the days we got some AppPool errors on event viewer. And after a week(3d time this happens) IIS stops responding. Restarting the service, restarting the AppPool, nothing works, only restarting the PC.

I installed Debug Diagnostic Tools and created a rule monitoring the Application Pool but the log shows nothing...

Any thoughts?
Who is Participating?
cce-puc-rioConnect With a Mentor Author Commented:
Please close the topic. We isolated the DLLs on different Application Pools and find out wich one was causing the error.
What version of Server 2003 are you running? (i.e. web edition, enterprise, standard, datacenter, etc...).
cce-puc-rioAuthor Commented:
Standard SP2.
Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Is the Identity for the application pool you are having issues with running with Configurable (i.e. an IWAM account, or an account created to run it), or is it one of the predefined accounts. If you havnt tried to set it to use the IWAM account I would reccomend trying that.
cce-puc-rioAuthor Commented:
We are using the predefined "network service"

You´re sayin to change to "configurable" and set IWAM account? Im gonna try that.

Just for information, whats the difference?
cce-puc-rioAuthor Commented:
Still having this issue. It´s not permission because everything on the site works fine for a week. Anyone else has any thoughts?
All Courses

From novice to tech pro — start learning today.