CODEWITHSUNDEEP
asp.netwindows-10iis-10
Eric
Eric

Reputation: 1297

IIS 10.0 AppPool crashing (causing 503 error)

Situation
After the latest Windows 10 updates (Nov 2017) were installed, the Application Pool required by a local web application keeps stopping/crashing displaying the message below in Event Viewer:

The worker process for application pool 'SrvAppPoolv4.0' encountered an error 'Cannot read configuration file ' trying to read configuration data from file '\\?\<EMPTY>', line number '0'. The data field contains the error code.

Setup
Windows 10
Internet Information Services (Version 10.0.16299.15)

What I've tried
I've tried a few things that I've found via Google, both here on Stackoverflow and other sites, nothing has helped so far. Some of what I've tried:

Nothing has helped.

Besides reinstalling the entire machine, what else can I try?

Also, besides the Event Viewer, are there any other logs I can review to get more details? I read something about an application log, but nothing as to where to find it?

Update:
I just tried what user3739842 suggested Add/Remove Programs, selecting IIS Express and then Repair - issue remains.

Solution
For me the solution was the following (thanks rusware):

  1. Go to the drive your IIS is installed on, eg. C:\inetpub\temp\appPools\
  2. Delete the directory (or virtual directory) with the same name as your app pool.
  3. Recycle/Start your app pool again.

In my case, it was a virtual directory which was corrupted.

Upvotes: 1

Views: 10950

Answers (1)

rusware
rusware

Reputation: 26

Hi the answer to your problem can be found here. It worked for me and same error

Cannot read configuration file ' trying to read configuration data from file '\\?\<EMPTY>', line number '0'.

Upvotes: 1

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