Can't launch IRONCAD on Windows 11?

Can't launch IRONCAD on Windows 11?
Emil Rindell

Emil Rindell

Jonas Bryntesson

Jonas Bryntesson

Henrik Andersson

Henrik Andersson

2025-04-14

Emil Rindell

Emil Rindell

Jonas Bryntesson

Jonas Bryntesson

Henrik Andersson

Henrik Andersson

2025-04-14

5 min read

For some users running IRONCAD 2024 SP2 and earlier, a Windows update has caused an error that makes IRONCAD unable to start. It looks like this when trying to start IRONCAD:

If you are running IRONCAD 2024 PU1 SP1 or SP2, just download and install SP3 and the error will be resolved:

Download SP3 for IronCAD DCS PU1 2024

If you are running a version earlier than IRONCAD 2024 PU1 SP1, you need to do this:

Close IRONCAD

Download and unzip the *zip file:‍

Download the HotFix here

Go into the unpacked folder and copy the *.dll file

Go to:

C:\Program Files\IronCAD\2023\bin

Paste and replace existing file

Then start IRONCAD

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