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There was a similar question before - "Error during Installation - Error at 1%": https://community.ptc.com/t5/Mathcad-Installation/Error-during-Installation-Error-at-1/m-p/725131
P.S. And article - "Error "Some applications failed or cancelled Click information icon of failed applications for details"": https://www.ptc.com/en/support/article/CS290899
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