SDK _Setukp 4/0.23.21468.msi

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Joined: Sat Feb 02, 2019 12:43 am

SDK _Setukp 4/0.23.21468.msi

Postby golfacce2 » Wed Oct 30, 2019 10:34 pm

Problem downloading Prepar3D_V4_SDK_Setup_4.0.23.21468.msi

Receive error message: "The signature of Prepare3D-V4_SDK-Setup is corrupt or invalid."

Four tries downloading with same message. Can someone please help.

Thank you,


User avatar
Brady Butler
Lockheed Martin
Posts: 965
Joined: Tue May 09, 2017 5:31 pm

Re: SDK _Setukp 4/0.23.21468.msi

Postby Brady Butler » Wed Oct 30, 2019 10:46 pm

Hello Bob,

Have you tried checking the md5 checksums to ensure they match those listed on our downloads page? You can review this post for more detailed information on downloading/checking the checksums:

Make sure you are running the installer as an administrator. If you verify that the download worked properly and the install isn't working you should follow this guide: ... 2&t=126570

Brady Butler
Prepar3D® Software Engineer

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