Autocad dwg drawing file is not valid

How can I fix this? If it is successful, the file should automatically open. Select and delete the files. Try and open your DWG file. I would like to ask you for advice I was at the office working the Autocad and Photoshop, and as my C drive was almost full just mb left , I decided to close the programs and run CCleaner Portable to delete the temporal files. Saved and closed Autocad, and cleaned the temp files 5gb in total, 4.

And then, suddenly CCleaner closed and my desktop icons were "refreshed". And like magic, the folder where my work files were, and other files that I opened one week ago, aaaand the folder where was the CCleaner disappeared. I checked hidden files, if I moved them to another folder, etc.

Nonetheless it let me to recover some files, like the dwg file that I need. And here is where Autcad can't open the file, even if it still has his 3mb, but it shows me the message of "Drawing file is not valid" if I try to open it.

I also tried to "recover" it, to insert it, but no luck. And no. What do you think? I think that maybe the "head" of the file is corrupted, but no idea how to repair it Go to Solution. Solved by john. I see that you are visiting as a new member. Welcome to the Autodesk Community! In all likely-hood this is a finished deal. You are welcome to attach the file though so I can take a look. Do you have any other copies of the file?

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Back to Topic Listing Previous Next. Filter by Lables. Message 1 of Drawing file is not valid. When attempting to open AutoCAD The files that are reported missing i. Please let me know how to fix. Thanks Steve Castner. Preview file. Message 2 of Post the DWG file Message 3 of One is attached. A drawing may have one or more of the following symptoms: Drawing file does not open. Drawing file opens with errors.

File hangs or crashes AutoCAD. Slow performance when editing a file. Error messages appear when working in a file. Commands do not work or are delayed.