Can't save AI file on my PC - "unkown error"

[DCJ07]

I've been working on my file and when I'm ready to save and extract I get this message: 

I've clicked on the link detailed in the box and followed all the steps and none of them work. 

Any idea how to get past this?

Thanks!!!

[NuelsonofLagos]

Do your files have linked assets?

A similar thread came up a long time ago and removing linked assets fixed it- one of them was corrupted.

Another solution would be to reset your Illustrator preferences (hold Shift+Opt+Cmd before startup).

[DCJ07]

Thanks for replying!

I'm new at this, how can I check linked assets?

I can't reset my illustrator as I can't save my work 😞

--
Doraliz

[Mariam Hovhannesyan]

Try this one 
https://helpx.adobe.com/illustrator/kb/fix-unknown-error-issues.html#:~:text=Try%20these%20steps,Go%....

[guillermof4164824]

I had the same issue, luckily I could figure it out wich an anomaly of the software could be. Nothing but a simple thing, nothing to do with deep preferences or some. I did not touch any of that so, always try to find something on what you draw. In my case, I filled an image with colour by accident. That little thing... I believe there are many others like this. Good luck.