---
title: "IIS process \"aspnet_wp.exe\" taking 90% of CPU resources all the time"
slug: "iis-process-aspnet-wpexe-taking-90-of-cpu-resources-all-the-time"
updated: 2024-03-29T06:19:24Z
published: 2024-03-29T06:19:24Z
canonical: "kb.pharos.com/iis-process-aspnet-wpexe-taking-90-of-cpu-resources-all-the-time"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://kb.pharos.com/llms.txt
> Use this file to discover all available pages before exploring further.

# IIS process "aspnet_wp.exe" taking 90% of CPU resources all the time

The "aspnet_wp.exe" process takes up to 90% of theCPU Resources all the time. I am seeing tremendous amounts of lines in the log looking like:

First-chance exception at 0x77e4bee7 in aspnet_wp.exe: 0xE0434F4D: 0xe0434f4d.

Additionally, many references to "No Symbols Loaded" as in the line below:

'aspnet_wp.exe': Loaded 'C:\WINDOWS\[Microsoft.NET](http://microsoft.net/)\Framework\v2.0.50727\aspnet_wp.exe', No symbols loaded.

Lastly:

[2008/01/02 11:38:38 P1500 T00D i PEDI] Pedi.Application_EndRequest.

or:

[2008/01/02 11:38:38 P1500 T00D i PEDI] InitializeSession site_code=SITECODE

[2008/01/02 11:38:38 P1500 T012 i PEDI] InitializeSession site_code=SITECODE

[2008/01/02 11:38:38 P1500 T00D i PEDI] InitializeSession OK, UTCTime=01/02/2008 11:38:38

[2008/01/02 11:38:38 P1500 T012 i PEDI] InitializeSession OK, UTCTime=01/02/2008 11:38:38

[2008/01/02 11:38:38 P1500 T00D i PEDI] Pedi.Application_EndRequest.

First-chance exception at 0x77e4bee7 in aspnet_wp.exe: 0xE0434F4D: 0xe0434f4d.

[2008/01/02 11:38:38 P1500 T00E i PEDI] InitializeSession site_code=SITECODE

[2008/01/02 11:38:38 P1500 T012 i PEDI] Pedi.Application_EndRequest.

[2008/01/02 11:38:38 P1500 T00E i PEDI] InitializeSession OK, UTCTime=01/02/2008 11:38:38

First-chance exception at 0x77e4bee7 in aspnet_wp.exe: 0xE0434F4D: 0xe0434f4d.

First-chance exception at 0x77e4bee7 in aspnet_wp.exe: 0xE0434F4D: 0xe0434f4d.

[2008/01/02 11:38:38 P1500 T011 i PEDI] InitializeSession site_code=SITECODE

[2008/01/02 11:38:38 P1500 T011 i PEDI] InitializeSession OK, UTCTime=01/02/2008 11:38:38

[2008/01/02 11:38:38 P1500 T00E i PEDI] Pedi.Application_EndRequest.

[2008/01/02 11:38:38 P1500 T011 i PEDI] Pedi.Application_EndRequest.

Is found in the log file. Attatched a copy of a sample log file output.

---

Pharos recommend uninstalling and re-installing several components:

- .NET Services

- Pharos EDI

Clients that have Pharos Omega Terminals are recommended to update to the latest firmware revision, which is available on the Pharos website:

[http://www.pharos.com/support/terminals/index.html](http://www.pharos.com/support/terminals/index.html)

There are also several known viruses that attack this process. We recommend running an updated virus utility on the effected server.

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