photoviewer.dll is not a valid win32 application

I'm getting an error code:  photoviewer.dll is not a valid win32 application 
any thoughts on how to fix?
Answer
Answer
The issue is due to a incompatible or invalid d3d9.dll file in your C:\Windows\System32  directory.

Search Google for a download, it is freely available. 

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Last updated February 14, 2023 Views 7,247 Applies to: