How to repair DWG file of AutoCAD drawing

Most likely, the power went out while AutoCAD was updating its internal object tables and DWG indexes, so the file structure remained incomplete. First, copy the corrupted file from the USB drive to your local disk and work only with the copy.

First, check for a file with the .bak extension in the project folder or an .sv$ autosave file in the AutoSave directory, then create a copy and rename it to .dwg. Also, try opening the copy using the RECOVER command, and after it opens successfully, run AUDIT.

If AutoCAD cannot parse the structure, open the file in the DWG Repair Kit, check the recovered layers and objects in the preview, and run the export to a fully installed version of AutoCAD. Since AutoCAD 2024 is not an LT version, the program can transfer the recovered data and save a new working DWG file. An alternative option is to upload a copy to www.dwg.repair from any computer or mobile device and receive the recovered document in DWG format.

This behaviour is typical of a physically damaged drive, where individual DWG blocks are read with errors. Do not run multiple checks and repairs on the drive using the only copy, as intensive reading can accelerate the HDD's eventual failure. First, create a sector-by-sector image of the drive or copy the file to a healthy drive, if it's still readable.

First, check the .bak backup file, previous versions of Windows, and the AutoCAD auto-save folder, and then try the RECOVER command.

If part of the structure is missing, the DWG Repair Kit can analyse the copied file, display the available elements, and transfer the recovered drawing to an installed copy of AutoCAD 2018. Save the result under a new name and on a different physical drive. If you cannot install the program, submit the corrupted file via www.dwg.repair and download the recovered DWG once processing is complete.

OneDrive may have started uploading or merging versions while AutoCAD was saving changes, so one of the copies ended up with an incomplete set of internal data. Synchronise and save all file versions to a separate local folder. First, try opening the OneDrive version history and downloading the latest copy created before the conflict occurred. Compare file sizes, check the .bak files, and run RECOVER separately for each non-zero version.

If none of the copies open normally, process the largest and most recent version in the DWG Repair Kit, after first checking the contents using the built-in preview. After recovery, export the data to the full version of AutoCAD 2023 and save it outside the synchronised folder. From a phone, tablet, or non-Windows computer, you can upload the same file to www.dwg.repair and receive a new DWG file online.

If the network connection was lost, AutoCAD may have saved only some of the new objects or failed to complete the update of the DWG service tables. First, copy the corrupted file and all associated .bak and .sv$ files to a local drive; do not attempt to recover the original file directly over the network. First, check the shadow copies of the shared folder and the server backups, and run the RECOVERALL command, especially if the project uses external references. If the file opens partially, run AUDIT, then transfer the objects to a new drawing using WBLOCK.

In the event of a complete failure, use the DWG Repair Kit on a Windows workstation with AutoCAD 2021 installed. It will analyse the local copy, after which the recovered elements can be saved to a new DWG file.

If you do not have access to the workstation, upload the drawing to www.dwg.repair via a browser and perform the recovery online.

The NAS restart may have interrupted the network write operation, leaving inconsistent headers, indexes, or object entries in the DWG file. Copy the file to a local drive on your Mac and stop working with the original version on the NAS. First, check the storage device's file system snapshots, Time Machine backups, and the AutoCAD for Mac auto-save directory. You can open an older copy and compare it with the corrupted one to determine the extent of the lost work.

To use the DWG Repair Kit, transfer the file to a Windows computer with the full version of AutoCAD installed, then analyse it and export the recovered data to a new DWG file.

If you don't have a Windows computer, it's easier to send a copy via Safari or another browser to www.dwg.repair. The online service works on macOS and returns the recovered file in DWG format.

The most likely cause is that the file wasn't downloaded completely, so some data or the final sections of the DWG structure are missing. First, compare the attachment size in the message with the file size on your phone, and try downloading it again over a stable connection. You can also check the app's cache, your downloads folder, and a backup from a messaging app or cloud service. If you can't download it again, save the existing file under a different name and do not edit it.

For local recovery, you'll need to transfer a copy to a Windows computer, open it in the DWG Repair Kit, and export the recovered objects using a fully installed version of AutoCAD.

An easier option on Android is to open www.dwg.repair in a browser, upload the corrupted file, and have it processed online. You can save the repaired DWG to your phone, Google Drive, or your work computer.

The error may have occurred because the modified version wasn't fully downloaded, and the cloud storage only received part of the updated DWG file. First, disable automatic synchronisation and save a local copy of the file using the "Files" app. First, check the version history in cloud storage and try to restore a version created before the failure. Also, ask the project owner for the original copy or a backup file if the document was shared.

To repair a file directly from your tablet, upload a copy via your browser at www.dwg.repair. The repair is performed on the server, so you don't need AutoCAD installed on your iPad, and the result is provided in DWG format.

You can use the DWG Repair Kit later on a Windows computer with the full version of AutoCAD by transferring the damaged file from your iPad to that computer.

The RDP disconnection itself usually doesn't corrupt the file; however, force-closing AutoCAD while it was saving may have left the DWG incomplete. Copy the main file, the .bak file, and all .sv$ files you find to a separate folder. As a first step, try renaming a copy of the most recent autosave to .dwg and then opening it with the RECOVER command. Also check the user profile's temporary folder on the remote workstation, not on your local laptop.

If the autosave is also corrupted, run the DWG Repair Kit directly on the workstation using the full version of AutoCAD 2020, then select the largest available copy. After previewing it, import the recovered data into AutoCAD and save it under a new name.

If you are unable to install the program, you can download the file from www.dwg.repair to recover the DWG file online.

The reboot may have occurred during a background save or model regeneration, causing individual object entries and the reference table to become out of sync. Create a copy of the problematic file and temporarily disable its synchronisation with the cloud. Next, open the Drawing Recovery Manager, check the .bak and .sv$ files, then launch AutoCAD with a blank drawing and use the RECOVER command. If the document opens only partially, run AUDIT and save it to a new file.

If AutoCAD crashes before the model is displayed, analyse the copy with the DWG Repair Kit and check the objects available in the preview window. In AutoCAD 2022, the recovered data can be transferred directly to a new DWG file.

You can also upload the same file to www.dwg.repair from any device and recover it without installing the program locally.

The antivirus may have interrupted the write operation or quarantined one of AutoCAD's temporary files. First, check the protection log and restore only those project files that were mistakenly blocked, after verifying that they are not infected. Next, locate the .bak and .sv$ files, copy them to a safe local folder, and try opening the renamed copies using RECOVER. Do not disable the antivirus completely, and do not exclude the entire drive from scanning.

If no backup versions are available, load the corrupted DWG into the DWG Repair Kit and assess which layers, blocks, and text elements can be recovered. If you have the full version of AutoCAD 2019, the program will transfer the recovered content to a new document.

For offline processing without installation, use www.dwg.repair and save the resulting DWG file separately from the original file.

The malware may have appended extraneous data, modified the DWG header, or corrupted specific areas of the file. First, isolate the computer from the network, complete a full system scan, and transfer a copy of the document to a clean storage medium. First, compare the file with a backup, check previous versions of Windows, and try opening the copy using the RECOVER command on a secure computer. Manually deleting excess bytes is not recommended, as the DWG format has a complex internal structure.

You can run the DWG Repair Kit on a clean Windows system with a full version of AutoCAD installed and use it to analyse the surviving elements of the drawing. Save the restored file under a new name and scan it with antivirus software.

The online version at www.dwg.repair is suitable if you need to process a backup copy from another computer, phone, or tablet.

CHKDSK may have saved the sequence of clusters it found, but it does not guarantee that it contains the entire file in the correct order. First, create an image of the USB drive and save copies of all .CHK files so that further actions do not alter the original storage medium. First, sort the fragments by size, check their headers with a specialised file-type detection program, and run RECOVER only on the copies. Also, look for .bak and .sv$ files on the computer where the drawing was edited before being transferred to the USB drive.

The fragment that best fits in terms of size can be imported into the DWG Repair Kit to check whether the program recognises DWG objects. If the preview shows project elements, export them to a new file using a fully installed version of AutoCAD. If you do not have a Windows version, send the selected fragment to www.dwg.repair and check the result online.

During RAID degradation or rebuild, individual file blocks may have been read incorrectly or written to the wrong physical sectors. Do not continue to actively use the array until you have checked the status of the disks and the controller, and perform recovery only from a copy or image. First, check the server backups, volume shadow copies, storage snapshots, and local autosave files on the designers' computers. Sometimes a recent .sv$ file is located in an employee's profile, even though the main DWG was stored on the server.

A corrupted copy can be processed using the DWG Repair Kit on a separate Windows workstation with the full version of AutoCAD 2023. After analysis, save the restored project to a healthy drive, not back to the problematic RAID.

For remote processing, the online service www.dwg.repair is available; you can upload the DWG file via a browser and receive the recovered file.

The email client may have saved only part of the attachment or decoded it incorrectly after the download was interrupted. First, open the email via a web interface and download the file again, then compare the sizes of both copies. As a first step, you can also save the original email as an EML file and extract the attachment using a different email client or archiver, without modifying the DWG file itself. If all the extracted copies are identical and won't open, use the RECOVER command on the local copy.

If that fails, open the file in the DWG Repair Kit and review the preview of the recovered drawing. The full version of AutoCAD 2024 will allow you to accept the recovered objects and save them to a valid DWG file.

On a computer without Windows or on a mobile device, upload the attachment to the online service www.dwg.repair and perform the recovery online.

The transfer may not have completed, or the service may have saved a corrupted local copy after the connection was lost. First, check the sent files folder, the desktop app's cache, and the Windows Recycle Bin, as the original document may still be there. First, try re-uploading the attachment via the web version of the messenger and compare the checksums or at least the sizes of the received files. On a Mac, save a copy locally and run AutoCAD's built-in recovery procedure.

If you can't find the original file, transfer the largest copy to a Windows computer and check it using the DWG Repair Kit. If you have a full version of AutoCAD, the program can transfer the surviving objects to a new DWG file.

macOS users can also upload the file themselves to www.dwg.repair and retrieve the restored document via a web browser.

The corruption may have occurred due to an abnormal termination of the save process, resulting in incomplete metadata in the DWG file. First, check the .bak file, autosave files, and previous versions in the folder—these are free ways to restore an earlier version. You can also try AutoCAD LT's built-in recovery feature on a copy of the document, followed by an AUDIT, if the drawing opens.

The DWG Repair Kit can analyse the file, but to directly transfer and save the repaired document, you need the full version of AutoCAD installed—not AutoCAD LT. Therefore, you can transfer the file and the program to another Windows computer running the full version of AutoCAD.

If you don't have such a computer, upload the damaged document to www.dwg.repair. The online service will process the data and provide a finished DWG file that you can open in AutoCAD LT.

Although both programs work with DWG files, the crash may have occurred while writing object tables or specific data created by a third-party editor. Make several copies of the file and do not save the original using other CAD programs. First, check the DraftSight backup file and temporary directories, and try importing a copy into a new, empty model. In AutoCAD, you can use RECOVER, and if the file opens partially, use AUDIT and WBLOCK to transfer intact objects.

If standard tools fail to recognise the content, load the DWG into the DWG Repair Kit on a computer with the full version of AutoCAD. After analysis, check the positions of lines, blocks, text, and dimensions, as third-party objects may not be fully restored.

The online service www.dwg.repair allows you to perform the same procedure via a browser and obtain a new DWG file without installing DraftSight or AutoCAD.

The cause may be a corrupted Civil 3D object, an incorrect reference between objects, or inconsistent surface data. First, create a copy of the entire project folder, including external references and data files. Try opening the drawing in Civil 3D with a clean profile, disable hardware acceleration, and run RECOVER without automatically loading external references. If the file opens briefly, export the standard objects to a separate DWG and save a backup in a simpler format.

The DWG Repair Kit can extract recognisable elements and transfer them to an installed copy of AutoCAD; however, specialised Civil 3D intelligent objects sometimes need to be recreated. The preview feature will help you assess the presence of key lines, texts, blocks, and polylines.

For online recovery, upload the file to www.dwg.repair and receive a recovered DWG, which you can then verify in Civil 3D.

If there wasn't enough memory, AutoCAD may not have finished writing large sections of the object database and file indexes. Copy the DWG file to a fast local SSD and make sure there's enough free space on the drive for temporary files. Increase the Windows paging file size, close other applications, and try running RECOVER on a computer with more RAM. Also check the .bak file and autosave versions: they may be slightly older but have the correct structure.

The DWG Repair Kit is suitable for analysing large files; however, the process should be performed on a stable system with the full version of AutoCAD installed and sufficient free space. Very, it is recommended to split the model into several DWG files and link them as external references.

The online service www.dwg.repair also accepts large DWG files via a web browser, but you must ensure you have a stable internet connection before uploading a large file.

Removing the flash drive while writing data often results in the loss of the file's last clusters or corruption of the data allocation table. Do not write anything else to this drive; first, create a full image of it. Check the .bak backup file on the USB drive and the .sv$ autosave file on the computer's system drive where AutoCAD was running. You can run RECOVER on the copy, followed by AUDIT, if the document opens at least partially.

If the built-in tool stops working, select the DWG file in the DWG Repair Kit on a Windows computer running a full version of AutoCAD 2012 or a newer compatible version. Save the recovered file to an internal drive, not to the original USB flash drive.

If necessary, you can upload the file to the cloud-based DWG file recovery service www.dwg.repair from any device and receive the repaired DWG file online.

The system crash may have interrupted the saving of the DWG file or deleted a temporary file before AutoCAD had a chance to offer to restore it. First, create a copy of the corrupted document and check your local Time Machine snapshots, which are sometimes more recent than the latest external backup. Next, locate the AutoCAD autosave files in the macOS user library and try opening them after changing their file extensions to .dwg. You can also restore yesterday's version and use it as a basis if you're unable to recover the latest changes.

To use the DWG Repair Kit, transfer a recent copy of the damaged file to a Windows computer with the full version of AutoCAD installed. After the analysis, save the recovered elements to a new DWG file and transfer it back to your Mac.

Without Windows, you can recover a DWG file using the cloud service www.dwg.repair directly from your macOS browser.

The memory card likely has file system errors or physically unstable blocks containing parts of the DWG file. Do not format the card or allow Android to automatically repair it before creating an image. First, try reading the storage device on a computer using a reliable card reader and create a sector-by-sector copy, skipping the corrupted areas. Then, look for the original DWG, backup versions, and temporary files within the image itself.

If you were able to copy at least part of the document, check it using the DWG Repair Kit on a Windows computer with the full version of AutoCAD. The program will show which elements have been preserved, after which you can export them to a new file.

You can also upload the copied DWG from your tablet or computer to www.dwg.repair and repair the DWG file online.

Simultaneous editing of the same DWG file could have caused a lock conflict, overwritten a newer version, or resulted in an incomplete write to the NAS. Prevent further editing of the folder and copy all versions and temporary files to a local drive. First, compare the modification times and file sizes, check the NAS snapshots, and try opening each copy using RECOVER. Lock files do not contain the complete drawing on their own, so deleting or renaming them to DWG is pointless.

Process the largest and most recent corrupted copy using the DWG Repair Kit, review the found objects, and import them into a fully installed version of AutoCAD. Check the old .bak file separately, as it may be in better condition than the main file.

To analyse each potentially usable version of the DWG file online, use www.dwg.repair and then compare the resulting DWG files.

First, you need to distinguish between a drive issue and logical damage to the DWG file. Do not run defragmentation, multiple CHKDSK scans, or install programs on the faulty SSD. To be safe, connect the drive in read-only mode and create an image of it using software that can re-read problematic sectors and skip faulty areas. After that, extract the DWG file from the image and work exclusively with the resulting copy.

If the file can be read but AutoCAD won't open it, transfer a copy to the DWG Repair Kit on a functional Windows computer with a full version of AutoCAD. Review the recovered data and save the result to another storage device.

If you've successfully extracted the file to a device with internet access, you can also upload it to the online service www.dwg.repair and retrieve the recovered DWG file online.

During conversion, AutoCAD rebuilds the internal DWG structure, and the crash may have corrupted the new file, while cloud sync may have overwritten the original version. Pause synchronisation and save all available versions to a separate local folder. First, restore the previous version of the original file from the cloud history, check the .bak file, and try opening the old DWG using RECOVER without immediately saving it to the new format. If the document opens, first save a backup copy of the original, then convert the duplicate.

Check the damaged versions in the DWG Repair Kit one by one, using the preview to compare the number of recovered objects. If you have the full version of AutoCAD installed, the program will allow you to transfer the data and save the new DWG in the appropriate format version.

If local recovery is not possible, upload the old or converted file to www.dwg.repair and receive a restored DWG file via the online service.