Disks with parents cannot be expanded

[LamyaImam]

[mbufkin]

Under the Files tab for the VM do you see a .vmsd file? It's possible it will have to be deleted manually. Always have a backup before trying procedures like this. Once deleted take a snapshot and then delete the snapshot normally. You may have to shutdown the VM first. I hope this helps.

[LamyaImam]

Thank you so much  for your guidance. It worked!

[a_p_]

It sometimes happens that the .vmsd file loses track of the snapshots. This is usually the case if a snapshot removal doe not succeed.

Assuming that you have sufficient free disk space on the datastore - especially if the VM's virtual disk is "Thin" provisioned - and that no other process (e.g. an unsuccessful backup) still locks one of the VM's files, it should work to create another snapshot, followed by "Delete All".

André

[LamyaImam]

Thank you  for explaining the issue.