Thank you for taking interest in GroupDocs.Comparison for .NET API.
We are sorry to hear that you are facing such issues. With reference to your attached screen shot you are trying to compare PDF files and there is some trial limitations are applicable on PDF comparison which is causing no result on your side. Please get a free temporary license from here to evaluate GroupDocs.Comparison for .NET API features.
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will have any other questions please feel free to ask.
Hi Muhammad ,
Hi David ,
Thank you for your inquiry,
We are unable to reproduce this issue at our end. Comparison with other files is working fine. kindly share your sample source and target file and also share sample code if you are using your custom code. This will help us to re-produce this issue at our-end.
Thank you for your cooperation.