Failed To Create Shadow Copy (code 2423)

Situation

A backup plan fails with the following error: Failed to create shadow copy. Cannot create a shadow copy for {disk label}. The volume is too large

Cause

This error generally occurs when the VSS service attempts to create a shadow copy for a volume that size exceeds 64 TB.

Also, writable snapshots or snapshots larger than 64 TB are not supported.

Solution

You can try to shrink the volume using the Disk Management utility.

Shrink Volume allows you to create a new disk space from the existing disk.

To shrink the volume, proceed as follows:

1. Run the Computer Management utility as administrator.
2. Expand Storage, then select Disk Management.
3. Select the required volume, then right-click to add an additional partition.
4. Click Shrink Volume.
5. Maximum space to shrink will be calculated automatically. Also, it is possible to specify the custom size to shrink.
6. Click Shrink.
7. As shrinking is completed, an unallocated region will be created in Disk Management.