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w3wp.exe is an IIS Application Pool Worker Process.<br />
Check the settings of the Application Pool(s) within MSIIS. Generally you will need to adjust a few things from the default like:<br />
- Allow 20 failures with 5 minutes (instead of 5 failures within 5 minutes)<br />
- Startup/shutdown time changed from 90 seconds to 120 seconds.<br />
- Recycled every 720 minutes (12 hours) instead of the default of 1740 minutes.<br />
<br />
-- Preferably use a Domain User for the Identity of the AppPool instead of &quot;Network Service&quot;, etc...<br />
<br />
--&gt; Also check the IIS Logs as it might give you more clue of what is going on like status of the request (200 for success) and the Time Taken to serve these requests.<br />
<br />
Hope this helps.<br />
<br />
Jerry
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Hi<br />
<br />
I have been having problems accessing my OWA as well as syncing our iPhones via Activesync. I have since reinstalled a certificate in ISS and now OWA works fine. But our iPhones still wont connect. Also, the file w3wp.exe is constantly near 90% CPU power on the server.<br />
<br />
Windows SBS 2003 SP2<br />
iPhones version 4.3.2<br />
<br />
Many thanks in advance<br />
<br />
Scott
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Hi

I have been having problems accessing my OWA as well as syncing our iPhones via Activesync. I have since reinstalled a certificate in ISS and now OWA works fine. But our iPhones still wont connect. Also, the file w3wp.exe is constantly near 90% CPU power on the server.

Windows SBS 2003 SP2
iPhones version 4.3.2

Many thanks in advance

Scott

w3wp.exe high CPU

IIS is Internet Information Services, the web server included with Windows Server operating systems. All current versions are built on a modular architecture; modules can be added or removed individually so that those required for specific functionality are installed. The full installation of IIS includes HTTP, security, content, compression, caching, logging and diagnostics.

Microsoft IIS Web Server

The iPhone is a smartphone made by Apple Inc. It and the iPad, along with several other mobile devices from Apple, run on the iOS operating system, which has its own topic, as does the iPad for device-specific questions. Native iOS applications are written in Objective-C or in Swift using the Cocoa Touch frameworks or HTML5 compiled with the help of a package manager such as Adobe PhoneGap; a common IDE is Xcode.

iPhone

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.