Solve Backup Error

Using Backup & Restore, this is the third night I got backup errors (red X), but the first time I saw the message.

"Backup failed on shadow copy on source volume got deleted. Might be caused by high write activity on the volume.
retry backup.. Consider increasing shadow copy storage using VSSADMIN resize shadow storage command.
Error code 0x80780169."

Retrying will be futile. Somebody suggested increasing the volume to 15%. There is very little information online.
Any suggestions? Should I increase the volume? I have never gotten this message in the years that I have been using Backup & Restore.

I am just supposed to be backing up my files; not creating an image, unless it copies to the disk regardless of what I choose to send to external drive.

In Event Viewer there were at least a half-dozen messages that the oldest volume was deleted. According to "Manage your space," I think I have one image on the drive and another image in backup, but I don't know if I can trust the info.

Thank you.

dalchina said:

Hi, it's great you maintain images. This won't be the response you may be hoping for, but may point you to something better.

A number here have experienced problems with Backup and Restore and not found solutions. Instead, turn to a 3rd party solution such as Macrium Reflect (free) or maybe Veeam Endpoint if you prefer a simpler GUI.

These are more robust, updated, and supported, and more feature rich and flexible. Hopefully too you get more comprehensible error messages! Macrium certainly has an active forum and good help and explanatory videos.

For file backup, you might consider using Windows File History; some of these 3rd party programs also support file backup.

You are absolutely right. I still want an answer.
This time w/Win10, I have been backing up my backups. I am using several programs other than Backup and Restore. As my trial with Macrium ended in disaster, I am using Acronis 2017.

Thank you.