3D Viewer Pro help and support.
Start with the quick checks below. Most viewing questions come down to the file's contents, export settings or Windows architecture.
Common questions and quick checks
Check the file, export settings and account state before requesting further support.
A model will not open
Confirm that the file uses STL, GLB, GLTF, OBJ, FBX, PLY or 3MF and is not a proprietary project format with the wrong extension. Re-export the asset from its source application, then try a simpler copy of the file.
The model is black or looks too dark
Switch between PBR, Clay and Normals to separate a lighting or material issue from a geometry issue. Check whether textures or material files are missing, and review normals for inverted faces.
The OBJ materials look different
Keep the OBJ together with its MTL and texture files. Export the material references with the mesh or use a self-contained format such as GLB when available.
The STL or 3MF size looks wrong
Check the bounding box and the units assumed by the source workflow. OBJ and STL often depend on the exporting application's unit conventions.
Animation is missing from an FBX or GLB
Confirm that the source file actually contains animation clips and that they were included in the export. 3D Viewer Pro can only play animation data present in the asset.
The material estimate differs from my slicer
The in-app estimate is based on enclosed volume, material density and filament cost. It does not include walls, infill, supports, purge or other slicer settings. Use the slicer for production estimates.
Pro features are not available
Use restore purchase and confirm that the Microsoft Store account matches the account used for the purchase. Current plan availability and pricing are controlled by the Store.
Windows architecture and installation
3D Viewer Pro targets Windows 10 and Windows 11 with x64 and ARM64 builds. Install from the Microsoft Store listing so Windows selects the appropriate package.
Continue with product and privacy details.
Open your next model on desktop.
Get 3D Viewer Pro from the Microsoft Store. Core viewing, shading modes, geometry data, print estimates and animation playback are free to use. Pro features are available through the plans shown in the Store.