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Hi @mzink 

Thank you for your question! 

I’d like to recommend to bring more details and context to your initial inquiry. For example:

1. Does the upload failure occur only with one specific CAD file, or with all new CAD files?
2. Are you using a supported version of the CAD tool and integration with Windchill?
3. Does the issue occur consistently from the same client machine or across multiple systems?

Please add screenshot(s) to better understand what you are trying to do in your process. 

Please refer to this guideline to make your questions more likely to receive a quick and useful answer. 

This will increase your chances to receive meaningful help from other Community members. 

Here's what a good question for Windchill looks like. 

Thank you for your participation and please let me know if you need further assistance! 

Best regards,