When attempting to take a backup, this error pops up:
Error E4F3000B: PreSnap failed on volume. (UMI: V-281-1267-11)
This can be due to scheduled Shadow Copies approaching the size limit.
When this happens, there is not enough available space for a new Shadow Copy.
The solution is to peform one of the following:
a. Increase the maximum size limit for Volume Shadow Copies.
b. Set to maximum size to Unlimited.
c. Disable scheduled Shadow Copies.