Posts: 1
Joined: Fri Mar 08, 2019 10:07 pm

Simplify3D will not start

Fri Mar 08, 2019 10:14 pm

So starting today I noticed that simplify3D would not start. When selecting a file through Fusion 360 to print nothing happens. Trying to launc S3D throug desktop icon does not work either. Opening a S3d file does not work either.

I ununistalled both my original version of S3d as well as the lattest updated version. Restarted windows 10 and did a fresh install of the latest download. No dice.

Restarted desktop, no dice!

Restored desktop to earlier date, restarted computer no dice!

Simplify3D will not luanch.

Any insight would be appreciated.

Thank you,


Posts: 281
Joined: Thu Aug 30, 2018 1:23 pm

Re: Simplify3D will not start

Wed Mar 13, 2019 9:41 am

Can you try the following:

Open Windows Explorer and navigate to the following directory:


You may need to enable hidden folders to access this directory. Once there, please try deleting the file called "savedState.factory". Then, open Simplify3D again.

Posts: 3
Joined: Fri Jan 19, 2018 6:49 pm

Re: Simplify3D will not start

Tue Jun 11, 2019 3:47 am

This worked for me.

SavedState was a directory not a file.
And I also deleted every other file in the S3D-software directory.

Posts: 2
Joined: Wed Jun 05, 2019 12:52 pm

Re: Simplify3D will not start

Tue Jun 11, 2019 9:22 am

Hi Barvogolf,

I'm experiencing the same issue and also made a post about it.
I usually fix the application startup issue deleting this exact key "HKEY_CURRENT_USER\Software\Simplify3D\S3D-Software\MainWindow" which looks to contain some file hostory information of some sort.
This way your profiles wil be untouched and you dont have to waste time to reconfigure the entire program, which i did like a couple of times...

Hope this helps for u and the devs will fix this issue soon.

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