@Sritharini Radhakrishnan , Although you see some unused references in the object browser, these dlls comes from your computer instead of your project. Please note that every dll has the default path, like C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.8\
. The Object Browser often shows that the common dlls based on your project. Therefore, I think there is no need to delete the unused dlls If you didn't meet the dll error.
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