You do not give enough details. I assume you are trying to download Inventor since you are on the Inventor forum. You do not say from where you are trying to download. Using the Browser download method, you must download three (3) separate files, expand them to a central folder, then install. The files are self-extracting EXE files but you will need all three. Using the Download method will avoid this issue.
John Hackney, Retired
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