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Author
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Topic: If you get the error threed32.OCX is unregistered or missing...
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David Burch
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posted July 30, 2025 01:32 PM
You can solve this by:
1. Open Command Prompt as Administrator:
Search for "Command Prompt" in the Start menu.
Right-click on "Command Prompt" and select "Run as administrator".
2. Navigate to the DLL's Directory:
cd C:\Windows\SysWOW64
3. Type the following command:
regsvr32 threed32.ocx
Press Enter.
This process should work to register any other unregistered .dll, just replace the filename in step 3.
From: Starpath, Seattle, WA
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David Burch
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posted February 25, 2026 08:12 AM
If you do not have the file, you can download a copy from
http://starpath.com/temp/Threed32.ocx
and place it in the C:\Windows\SysWOW64 folder and that might do the job, with out the command line above.
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We do not know how this file can go missing after the program has successfully run for some time, but we have had a couple reports of this happening and the above resolves the issue.
From: Starpath, Seattle, WA
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