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If you are experiencing any issues with your desktop wallpaper or taskbar buttons
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DisplayFusion.Log - Full of Win32 Exceptions on nvsmartmaxapp.exe

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Sebastian Graser
1 discussion post
As i was investigating if Windows Defender is doing "to much" on some files (as i experienced performance issues) i got aware of DisplayFusions.log .... the file (around 9000 lines since 11 a.m) is full of entries like these

(These lines repeat .....) 

2025/12/24 23:32:45.5993##_##INFO:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##DFRemoteHandlers:IsFileRunning:53##_##-##_##Not Running: 'C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_14ee77829c8bb2f4\nvsmartmaxapp64.exe'##_##-
2025/12/24 23:33:45.5355##_##INFO:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##BFIpc.Server:StartIpcHandlerWorkerTHREAD:133##_##-##_##IPC Received [DFServicev11]: IsFileRunning##_##-
2025/12/24 23:33:45.5360##_##INFO:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##DFRemoteHandlers:IsFileRunning:37##_##-##_##Path: 'C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_14ee77829c8bb2f4\nvsmartmaxapp.exe'##_##-
2025/12/24 23:33:45.5437##_##FAIL:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##BFProcessHelpers.Static.GetProcessMainFileName:GetProcessMainFileNameOldMethodNOCACHE:79##_##-##_##processId: 172, Zugriff verweigert, Exception.HResult: E_FAIL (0x80004005), [System.ComponentModel.Win32Exception]##_##-
2025/12/24 23:33:45.5498##_##FAIL:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##BFProcessHelpers.Static.GetProcessMainFileName:GetProcessMainFileNameOldMethodNOCACHE:79##_##-##_##processId: 212, Zugriff verweigert, Exception.HResult: E_FAIL (0x80004005), [System.ComponentModel.Win32Exception]##_##-
2025/12/24 23:33:45.5603##_##FAIL:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##BFProcessHelpers.Static.GetProcessMainFileName:GetProcessMainFileNameOldMethodNOCACHE:79##_##-##_##processId: 2064, Zugriff verweigert, Exception.HResult: E_FAIL (0x80004005), [System.ComponentModel.Win32Exception]##_##-
2025/12/24 23:33:45.5855##_##INFO:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##DFRemoteHandlers:IsFileRunning:53##_##-##_##Not Running: 'C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_14ee77829c8bb2f4\nvsmartmaxapp.exe'##_##-
2025/12/24 23:33:45.5894##_##INFO:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##BFIpc.Server:StartIpcHandlerWorkerTHREAD:133##_##-##_##IPC Received [DFServicev11]: IsFileRunning##_##-
2025/12/24 23:33:45.5899##_##INFO:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##DFRemoteHandlers:IsFileRunning:37##_##-##_##Path: 'C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_14ee77829c8bb2f4\nvsmartmaxapp64.exe'##_##-
2025/12/24 23:33:45.6054##_##FAIL:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##BFProcessHelpers.Static.GetProcessMainFileName:GetProcessMainFileNameOldMethodNOCACHE:79##_##-##_##processId: 172, Zugriff verweigert, Exception.HResult: E_FAIL (0x80004005), [System.ComponentModel.Win32Exception]##_##-
2025/12/24 23:33:45.6166##_##FAIL:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##BFProcessHelpers.Static.GetProcessMainFileName:GetProcessMainFileNameOldMethodNOCACHE:79##_##-##_##processId: 212, Zugriff verweigert, Exception.HResult: E_FAIL (0x80004005), [System.ComponentModel.Win32Exception]##_##-
2025/12/24 23:33:45.6240##_##FAIL:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##BFProcessHelpers.Static.GetProcessMainFileName:GetProcessMainFileNameOldMethodNOCACHE:79##_##-##_##processId: 2064, Zugriff verweigert, Exception.HResult: E_FAIL (0x80004005), [System.ComponentModel.Win32Exception]##_##-
2025/12/24 23:33:45.6436##_##INFO:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##DFRemoteHandlers:IsFileRunning:53##_##-##_##Not Running: 'C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_14ee77829c8bb2f4\nvsmartmaxapp64.exe'##_##-
2025/12/24 23:34:45.5369##_##INFO:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##BFIpc.Server:StartIpcHandlerWorkerTHREAD:133##_##-##_##IPC Received [DFServicev11]: IsFileRunning##_##-
2025/12/24 23:34:45.5373##_##INFO:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##DFRemoteHandlers:IsFileRunning:37##_##-##_##Path: 'C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_14ee77829c8bb2f4\nvsmartmaxapp.exe'##_##-
2025/12/24 23:34:45.5469##_##FAIL:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##BFProcessHelpers.Static.GetProcessMainFileName:GetProcessMainFileNameOldMethodNOCACHE:79##_##-##_##processId: 172, Zugriff verweigert, Exception.HResult: E_FAIL (0x80004005), [System.ComponentModel.Win32Exception]##_##-
2025/12/24 23:34:45.5573##_##FAIL:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##BFProcessHelpers.Static.GetProcessMainFileName:GetProcessMainFileNameOldMethodNOCACHE:79##_##-##_##processId: 212, Zugriff verweigert, Exception.HResult: E_FAIL (0x80004005), [System.ComponentModel.Win32Exception]##_##-
2025/12/24 23:34:45.5678##_##FAIL:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##BFProcessHelpers.Static.GetProcessMainFileName:GetProcessMainFileNameOldMethodNOCACHE:79##_##-##_##processId: 2064, Zugriff verweigert, Exception.HResult: E_FAIL (0x80004005), [System.ComponentModel.Win32Exception]##_##-
2025/12/24 23:34:45.5827##_##INFO:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##DFRemoteHandlers:IsFileRunning:53##_##-##_##Not Running: 'C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_14ee77829c8bb2f4\nvsmartmaxapp.exe'##_##-
2025/12/24 23:34:45.5898##_##INFO:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##BFIpc.Server:StartIpcHandlerWorkerTHREAD:133##_##-##_##IPC Received [DFServicev11]: IsFileRunning##_##-
2025/12/24 23:34:45.5904##_##INFO:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##DFRemoteHandlers:IsFileRunning:37##_##-##_##Path: 'C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_14ee77829c8bb2f4\nvsmartmaxapp64.exe'##_##-
2025/12/24 23:34:45.5941##_##FAIL:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##BFProcessHelpers.Static.GetProcessMainFileName:GetProcessMainFileNameOldMethodNOCACHE:79##_##-##_##processId: 172, Zugriff verweigert, Exception.HResult: E_FAIL (0x80004005), [System.ComponentModel.Win32Exception]##_##-
2025/12/24 23:34:45.5968##_##FAIL:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##BFProcessHelpers.Static.GetProcessMainFileName:GetProcessMainFileNameOldMethodNOCACHE:79##_##-##_##processId: 212, Zugriff verweigert, Exception.HResult: E_FAIL (0x80004005), [System.ComponentModel.Win32Exception]##_##-
2025/12/24 23:34:45.6020##_##FAIL:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##BFProcessHelpers.Static.GetProcessMainFileName:GetProcessMainFileNameOldMethodNOCACHE:79##_##-##_##processId: 2064, Zugriff verweigert, Exception.HResult: E_FAIL (0x80004005), [System.ComponentModel.Win32Exception]##_##-
2025/12/24 23:34:45.6159##_##INFO:L1##_##displayfusionservice.exe:12.0.1.0:33044##_##DFRemoteHandlers:IsFileRunning:53##_##-##_##Not Running: 'C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_14ee77829c8bb2f4\nvsmartmaxapp64.exe'##_##-


Any idea what displayfusion wants to do and why this fails .... ?
Dec 24, 2025  • #1
Keith Lammers (BFS)'s profile on WallpaperFusion.com
DisplayFusion will look for those files if you have split enabled and have chosen yes to disable the Nvidia helper processes. It has to re-check frequently, because driver updates re-create the helpers.

Please let us know if you have any further questions at all.

Thanks!
Dec 29, 2025  • #2
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