Failed to recover the faulty DWG file

Recovery Toolbox for DWG may be able to recover your corrupted DWG file.

Reasons for unsuccessful DWG file recovery

Possible reasons why DWG Online Recovery Service was unable to recover a damaged AutoCAD file (DWG file).

Here is a list of the most common reasons why DWG Online Recovery Service may not be able to recover a damaged DWG file:

1. The file is truncated due to incomplete download or copying.
2. The file size is 0 bytes.
3. All bytes in the file have a zero value.
4. The file is almost empty, as almost all bytes in the file are equal to 0.
5. The HEADER section is missing or completely corrupted.
6. The object/descriptor map (handle map) is severely damaged.
7. Ownership references (hard-owner / hard-pointer) and reference cycles are broken.
8. Duplicate object identifiers that cannot be fixed automatically.
9. The layer/style/line table is damaged, table entries are destroyed.
10. Blocks/definitions are damaged, there is a break in the BLOCK/ENDBLK chain.
11. Broken 3D geometry (ACIS/SAT) and kernel version not recognized.
12. File is encrypted or password protected.
13. This is not a DWG file. It may be a renamed DWF/DGN/NWD/zip file.
14. The DWG version is too old and is not supported.
15. The file is not a DWG, but a DWT/DWS/DXF and was uploaded by mistake.
16. The file is from a third-party product (Civil 3D, Plant 3D, Architecture, or other) with AEC objects without Object Enabler.
17. There are incorrect proxy objects from third-party plugins and there are no corresponding Enablers.
18. Embedded OLE objects or raster objects are damaged and prevent the entire file from being read.
19. Scales/contours are damaged, causing a failure during deployment.
20. The section with constraints or parameters is incorrect.
21. Dynamic blocks with broken parameters.
22. Critical error in the dictionary section (ACAD_DICTIONARY).
23. The undo/redo or extended data section (XData/XRecord) is corrupted.
24. The file has a digital signature that interrupts reading.
25. A virus has repackaged or encrypted the DWG file.
26. The file has been truncated by cloud synchronization due to a version conflict.
27. Network failure when uploading to the service or only part of the DWG file has been uploaded.
28. The archive/container with DWG is damaged because the .zip file was uploaded with errors.
29. The file is temporary (*.sv$ / *.bak / *.ac$) and critically incomplete.
30. Incorrect encoding of names inside the DWG file causes a failure.
31. Too many nested references or cyclic XREF dependencies.
32. Plot styles/fonts/SHX are missing, which breaks reading.
33. Dense logical fragmented structures of the DWG file: many fragments without connections.
34. Damaged saved views/perspectives/spaces (Model/Paper).
35. Unexpected termination of AutoCAD during saving left the DWG file in a draft state that cannot be recovered.
36. Inconsistency between ACIS versions and DWG versions in a single file.
37. Exotic objects from alternative CAD systems (BricsCAD/GstarCAD, etc.) in a non-standard format.
38. Too high density of annotations/regions/meshes — parsing does not fit within the limits.
39. PDF/DGN backgrounds are embedded incorrectly due to broken descriptors.
40. Embedded points/point clouds (RCP/RCS) are damaged.
41. Company security policies block file upload to an external service.