![w3wp.exe' (IIS Worker Process) process CPU is 99% - Controller client slow, and often says "Not Responding" - caused by importing unusually large (corrupt) CSV file w3wp.exe' (IIS Worker Process) process CPU is 99% - Controller client slow, and often says "Not Responding" - caused by importing unusually large (corrupt) CSV file](https://www.ibm.com/support/pages/system/files/inline-images/image-20190215143803-1.png)
w3wp.exe' (IIS Worker Process) process CPU is 99% - Controller client slow, and often says "Not Responding" - caused by importing unusually large (corrupt) CSV file
![windows - How can you know what is w3wp.exe doing? (or how to diagnose a performance problem) - Server Fault windows - How can you know what is w3wp.exe doing? (or how to diagnose a performance problem) - Server Fault](https://i.stack.imgur.com/ohKp6.png)
windows - How can you know what is w3wp.exe doing? (or how to diagnose a performance problem) - Server Fault
Move Windows server 2012 R2 to Windows Server 2019 IIS w3wp.exe 100% CPU usage - Microsoft Community Hub
A Blog to a System Admin's Passion: IIS Worker Process (w3wp.exe) memory usage too high in Exchange Server
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Troubleshoot high CPU usage in an IIS application pool - Internet Information Services | Microsoft Learn
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Troubleshoot high CPU usage in an IIS application pool - Internet Information Services | Microsoft Learn
![Lab 19: Debugging a high CPU hang W3WP process using WinDbg | The Best C# Programmer In The World - Benjamin Perkins Lab 19: Debugging a high CPU hang W3WP process using WinDbg | The Best C# Programmer In The World - Benjamin Perkins](https://www.thebestcsharpprogrammerintheworld.com/wp-content/uploads/2020/07/image-525.png)
Lab 19: Debugging a high CPU hang W3WP process using WinDbg | The Best C# Programmer In The World - Benjamin Perkins
![DevOps & SysAdmins: High CPU usage of IIS process (w3wp.exe) because of many slow clr.dll!CopyPDBs - YouTube DevOps & SysAdmins: High CPU usage of IIS process (w3wp.exe) because of many slow clr.dll!CopyPDBs - YouTube](https://i.ytimg.com/vi/LWC-rGI7i4k/mqdefault.jpg)
DevOps & SysAdmins: High CPU usage of IIS process (w3wp.exe) because of many slow clr.dll!CopyPDBs - YouTube
![Lab 19: Debugging a high CPU hang W3WP process using WinDbg | The Best C# Programmer In The World - Benjamin Perkins Lab 19: Debugging a high CPU hang W3WP process using WinDbg | The Best C# Programmer In The World - Benjamin Perkins](https://www.thebestcsharpprogrammerintheworld.com/wp-content/uploads/2020/07/image-526.png)
Lab 19: Debugging a high CPU hang W3WP process using WinDbg | The Best C# Programmer In The World - Benjamin Perkins
![windows - w3wp process using 100% cpu and not attached to any of the application pool - Server Fault windows - w3wp process using 100% cpu and not attached to any of the application pool - Server Fault](https://i.stack.imgur.com/raTvC.png)
windows - w3wp process using 100% cpu and not attached to any of the application pool - Server Fault
![Troubleshoot high CPU usage in an IIS application pool - Internet Information Services | Microsoft Learn Troubleshoot high CPU usage in an IIS application pool - Internet Information Services | Microsoft Learn](https://learn.microsoft.com/en-us/troubleshoot/developer/webapps/iis/health-diagnostic-performance/media/troubleshoot-high-cpu-in-iis-app-pool/perf-monitor-w3wp-cpu-usage.png)
Troubleshoot high CPU usage in an IIS application pool - Internet Information Services | Microsoft Learn
![Lab 19: Debugging a high CPU hang W3WP process using WinDbg | The Best C# Programmer In The World - Benjamin Perkins Lab 19: Debugging a high CPU hang W3WP process using WinDbg | The Best C# Programmer In The World - Benjamin Perkins](https://www.thebestcsharpprogrammerintheworld.com/wp-content/uploads/2020/07/image-524.png)
Lab 19: Debugging a high CPU hang W3WP process using WinDbg | The Best C# Programmer In The World - Benjamin Perkins
![Lab 19: Debugging a high CPU hang W3WP process using WinDbg | The Best C# Programmer In The World - Benjamin Perkins Lab 19: Debugging a high CPU hang W3WP process using WinDbg | The Best C# Programmer In The World - Benjamin Perkins](https://www.thebestcsharpprogrammerintheworld.com/wp-content/uploads/2020/07/image_thumb-523.png)