https://www.ptcusercommunity.com/t5/Mathcad-Installation/Error-when-trying-to-submit-upgrade-request/m-p/1050427#M5160 I am trying to upgrade my PTC account so that I can download MathCAD, but am receiving an internal error message when I submit the upgrade request with my customer number and site number or sales order number. Fri, 09 Jan 2026 20:50:14 GMT AH_14445062 2026-01-09T20:50:14Z https://www.ptcusercommunity.com/t5/Mathcad-Installation/Error-when-trying-to-submit-upgrade-request/m-p/1050427#M5160 I am trying to upgrade my PTC account so that I can download MathCAD, but am receiving an internal error message when I submit the upgrade request with my customer number and site number or sales order number. Fri, 09 Jan 2026 20:50:14 GMT https://www.ptcusercommunity.com/t5/Mathcad-Installation/Error-when-trying-to-submit-upgrade-request/m-p/1050427#M5160 AH_14445062 2026-01-09T20:50:14Z https://www.ptcusercommunity.com/t5/Mathcad-Installation/Error-when-trying-to-submit-upgrade-request/m-p/1050429#M5161 <UL> <LI>Article - "<STRONG>How to upgrade the PTC web account to Customer support account</STRONG>": <A href="https://www.ptc.com/en/support/article/CS43007" target="_blank">https://www.ptc.com/en/support/article/CS43007</A>&nbsp;</LI> <LI>If problems persist, use - PTC <STRONG>"Web Account Case Logger</STRONG>": <A href="https://support.ptc.com/support/feedback/web-account.htm" target="_blank">https://support.ptc.com/support/feedback/web-account.htm</A>&nbsp;</LI> </UL> Fri, 09 Jan 2026 23:06:30 GMT https://www.ptcusercommunity.com/t5/Mathcad-Installation/Error-when-trying-to-submit-upgrade-request/m-p/1050429#M5161 VladimirN 2026-01-09T23:06:30Z