This will resize the limit to XX percentage size for the X: drive. To change the limit: vssadmin Resize ShadowStorage /For=X: /On=X: /Maxsize=XX%.To check the current limit set: vssadmin list shadowstorage.The shadow storage size can be checked and manually changed through command prompt. The steps and commands to alter the shadowstorage on any given volume are uniform across operating systems. The steps to configure shadow copies varies between operating systems, so it's advised to check Microsoft's knowledge base for the steps specific for your OS. VSS requires space allocated to each volume to be able to create and store snapshots. Known Cause 2 - Shadow storage on the source drives is not configured or not large enough. You should also run a registry cleaner after the other backup solutions have been uninstalled. It is best practice to only have one backup solution installed at any one time. If you have (or had) more than one backup program installed on your system, disable / uninstall all of the programs except for BackupAssist, and run the backup job again. Many backup solutions have their own proprietary snapshot manager which can cause conflicts with other backup solutions installed on the system. Known Cause 1 - Multiple backup solutions installed The error's known causes and resolutions are described below. This error is generated when the Volume Shadow Copy Service (VSS) is unable to run due to an unexpected error.
Volume Shadow Copy Error 0x8004230f - unexpected provider error