Signtool returns error 0x800700C1 while trying to sign AutoCAD OEM 2023 setup.exe

Jens,
We were able to automate our workflow around this issue in OEM 2023 until they come up with a solution.
We did the following:

  1. After the OEM Install Wizard was complete we removed the “Security Directory RVA” from the Setup.exe using CFF Explorer. You can refer to our previous comment and picture above to show the area.
  2. We then were able to sign the Setup.exe
  3. Rather than doing a manual process each time we chose to use the above corrected and signed Setup.exe as a base that we copy and overwrite the setup.exe each time we build an installer.

This works for us because our setup does not require that the setup.exe be changed very often, if at all. Setup.exe mainly points everything to the installer. All the essential heavy lifting occurs after setup.exe is ran.
As you already noted, delcert.exe does not work with OEM 2023 Setup.exe and we ran into additional issues when we tried it. It stripped out the ICO information and removed the Run As Admin that Autodesk requires on its setup.exe’s. This did not happen in previous OEM’s and delcert.exe is still a safe option to use to sign OEM 2022 and older.
Hope this may help anyone running into this.
Shawn Golden
Microvellum

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