Hi. Thank you for your question and reaching out. I’d be more than happy to help you with your query
According to this article https://www.altaro.com/hyper-v/clean-up-hyper-v-checkpoint/
Try to make a new checkpoint and then delete it.
Everyone has experienced a toilet that won't stop running. Sometimes you're lucky, and all you have to do is jiggle the handle to remind the mechanism to drop the flapper ALL the way over the hole. Technique 3 is a "jiggle the handle" type of correction. We just touch the checkpointing system on the shoulder to remind it what to do.
Right-click on the virtual machine (not a checkpoint) in the Hyper-V Management interface and select Checkpoint:
Right-click on the topmost checkpoint subtree at the root of all of the VM's checkpoints and choose Remove checkpoint subtree:
If this option does not appear, our "jiggle the handle" solution will not work. If possible, try to erase the checkpoint you just created.
Checkpoint-VM -VMName demovm is the equivalent PowerShell command, followed by Remove-VMCheckpoint -VMName demovm.
If the reply was helpful, please don’t forget to upvote or accept as answer, thank you.