Windows 10: My Paint 3D file won't open, any help?

Can someone help me, I have a rather large file in Paint 3D that I've been working on for around a year, however when I went to open it today note that I had opened it early this morning and added some small things to it before saving it and closing as I usually do it would take a long time to load as it normally does due to what I can only assume is a large file size, and after a while it didn't load and instead gave me this screen:All other files are working fine, even some older backups of this file, however this one is not. I have tried restarting, the program, my computer and completel

:)

 

Paint 3D cannot open STL files

Please update Paint 3D to be able to open STL files. View 3D *can* open them just fine.

When I open them in View 3D, and click the "Paint 3D" button, it gives this error message:

"We couldn't open Paint 3D. Wait a bit, then try again."

I did, and it keeps failing. So then, I manually go to Paint 3D, and open the file from there. In order to do that, I have to enter "*.*" as the filename, otherwise it won't pop up. The file types dropdown doesn't list STL files. But that's for good reason,
apparently, because Paint 3D says:

"Paint 3D can't read this file. It may be invalid, or in a format that we don't currently support."

So, recap:

1) The file is completely valid, because View 3D can open it just fine

2) Why can Paint 3D not open a file, while View 3D can?

3) Please add this functionality to paint 3D. It's an industry standard file type for 3D models.

This is on Windows 10.0.15063.

 

Lowering triangle amount on Paint 3D

Hi,

The option to increase or decrease the number of triangles/polygons in
Paint 3D is a great idea. We suggest the you share your idea/feedback so that it will be considered in future updates of the app. Here are the steps to send a feedback:

• Open the Paint 3D app.
• Click on Menu.
• On the lower left portion, select Help and Feedback.
• Press the Give feedback button under Give feedback.

Regards.

 

Paint 3D: Can't open project

Hi,



Thank you for writing to Microsoft Community Forums.



We understand your concern as you are having difficulties with Paint 3D app on your PC. In order to get clarity and to assist you accordingly, please reply with the answers to the questions below:

• What is the Version and Build of Windows 10 installed? (Type
  winver in Windows search/Run command)
  
• What is the Version of Paint 3D installed on the PC?
  
• Did you try opening any other project or did you try to open the same project on a different device?
  
• Are you aware of any recent changes on the PC prior to this issue?

However, we would suggest you to perform step 1, 3 & 7 from this article:
Fix problems with apps from Microsoft Store



If the issue persists, then we would suggest you uninstall and reinstall Paint 3D app.

1. Close Paint 3D app. Press
   Windows + X key.
   
2. Select Windows PowerShell (Admin)
   from the list.
   
3. Copy and paste this command:
   Get-AppxPackage *Microsoft.MSPaint* | Remove-AppxPackage
   
4. Press Enter key and once the process completes, restart the PC.
   
5. After restart go to Microsoft Store and install
   Paint 3D.

If the issue persists, then we would suggest you to create a new administrator user account and check, refer this article to
create a local user or administrator account in Windows 10.



Let us know the results. We will certainly assist you further.



Aditya Roy

Microsoft Community – Moderator