IIS application pools stopped frequently with error code 0x80070426 ? Need advise to resolve this . Please help me.

Question

Our application installed on IIS version 10.0 & Windows server 2016.

It is build using asp.net. Application pools are getting stopped frequently. Not one app pool, this is happening for all app pools.
When we try to start & recycle IIS application pool also stop/start ISS also not helping. Its throwing below error. Application pools are configured with machine account.

Cannot Start application pool.

There was an error while performing this operation.
Details:
The Service has not been started error 0x80070426 (Exception from HResult 0x80070426.

Event Viewer:
A Process serving application pool AAA terminated unexpectedly. The Process id was '53376'. The process exit code was 0xffffffff.

What I have tried:

I tried reset of IIS but it is not helpful. Same error is throwing after IIS reset.
Also I have stopped and started application pool. But it is not allowing me to stop/start because it is throwing same error.

If I restart the server Application pool is started working.
As a workaround I am restarting the server whenever we get this application pool stopped issue.

Answer 1

Hi @Raja ,

I think your problem requires using a debugging tool (such as IIS Debug Diagnostics) and taking a dump of the process to see why it's crashing. See this article How to use the Debug Diagnostic Tool to troubleshoot a process that has stopped responding in IIS.

In addtion, If you can, I suggest you'd better open a support ticket via: https://support.microsoft.com, because they will analyze the dump file for you more professionally to solve your problem.

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Best regards,
Yurong Dai

Answer 2

Check these similar threads for help -

https://www.codeproject.com/Questions/550258/Applicationpluspoolplusissueplusinplusiis

https://www.codeproject.com/Questions/760505/Application-Pools-on-IIS

https://learn.microsoft.com/en-us/answers/questions/751952/iis-app-pool-stops.html