Backup Backup Backup. As a computer support tech if there is one thing I preach to my clients is backup.
I, and most of my clients, use the free Macrium Reflect to image (backup) the entire (all partitions) operational drive.
I also separately backup Sonar projects which are on a separate drive.
I had a disc image of my drive that was made 2 days before the 1803 update. If 1803 failed or I had problems I could restore to before the 1803 easily. Fortunately I didn't have to do.
Use Macrium Reflect (or other disc imaging of your choice but not the built in Windows backup) to image the entire disc to a separate disc. Do this periodically so you have fairly recent drive images. I keep the current and the previous disc images.
https://www.macrium.com/reflectfree