Factorio Forums

This is something new in .13.6. Periodically autosave fails, not sure why since as far as i know, nothing other than factorio should be holding a lock on that file.

Had this also recently but updating to 0.13.6 fixed it for me.

Do you have an anti-Virus, espacially Avast?

Possibly, an eventual fix for this could be to detect if the file got locked by some external process and indicate that in the Saving progress window ("Waiting for file access (antivirus?)...").

It's possible it could be antivirus, but literally the only change was going from .5 to .6. Also, incidentally manually saving doesn't throw the error. (also the auto save does indeed save, but you still get that error)

Edit: this is the error from the log:

10004.283 Warning WriteFileGuard.cpp:26: Writing C:/Users\jonathon\Downloads\Factorio_x64_0.13.0\Factorio_0.13.0\saves\_autosave3.zip failed; previous version (if any) should still be available

Can you reproduce this in .7?