Hello YuriAlo,
I am an independent advisor and hoping to help you today.
What is your Onenote version?
Do this happen when you save a lot of files to the hd or is randomly?
If you close Onenote and open again, are you still unable to save the image?
Maybe it is because the image is to large or Onenote has some internal issues.
Could you try to re-install Onenote:
https://support.office.com/en-us/article/instal...
(BTW: Onenote 2016 is much better than Onenote version from the Microsoft Store)
But before, try doing next:
As a workaround, could you try the following:
Copy the image with combination keys (Ctrl+C) and paste in another location (Ctrl+V) in the same page, and try to save again.
Another workaround to save the images that you have in your notebooks from Onenote is using Snipping Tool to capture screenshots:
1.- Click right button over the image and select "Restore to Original Size"
2.- Open Snipping Tool, and click in New, select the Onenote image with the screen selector and save the file with any name.
https://support.microsoft.com/en-us/help/13776/...
Do not hesitate to ask if need more information.
I hope that was useful.
Have a good day.
Best regards,
Renzo Dazarola