I am experiencing the symptoms explain in KB975798 for both Vista and Windows Server 2008. Only the Vista fix is available for download and I am trying to find the one for Server 2008R2 SP1 x64. I ran Windows Update and was also unable to locate this hotfix. http://support.microsoft.com/kb/975798 I am hoping someone in this forum can assist. Thanks in advance. Daniel

Hello, Windows server 2008 R2 SP1 machines contain all hotfixes from earlier version so please contact Microsoft support about your problems.Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

Hello, like Meinolf said, you are up-to-date. If you have the same symptoms, I recommend contacting Microsoft CSS to report that. Also, perform a full scan to delete possible existing of viruses and malware programs. Please also uninstall all unused programs. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified IT Professional: Enterprise Administrator Microsoft Certified IT Professional: Server Administrator

Hi, W3wp.exe is one of Internet Information Services (IIS) worker processes. For more information, please refer to the following Microsoft TechNet article: IIS Worker Process http://technet.microsoft.com/en-us/library/cc735084(WS.10).aspx For IIS Server related issue, the best resource is IIS forum. Based on the current situation, you’d better submit a new question to IIS forum for further assistance. In this way, your issue can be resolved effectively. IIS http://forums.iis.net/ For more troubleshooting information, please also refer to the following Microsoft blog: Using ProcDump.exe to monitor w3wp.exe for CPU spikes http://blogs.iis.net/webtopics/archive/2009/08/07/using-procdump-exe-to-monitor-w3wp-exe-for-cpu-spikes.aspx Thanks for your understanding! Regards,Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.