Re: Can't convert Server 2008 R2 Machine getting error: The VSS snapshots cannot be stored because there is not enough space on the source volumes or because the source machine does not have any NTFS volumes. Error code: 2147754783 (0x8004231F).

Got it figured out.  My Appassure snapshots were also failing with a similar error so this is what I did to resolve it.  My servers now converted with no issues.

1. Open Disk Manager.
2. Look at the SRP partition, and see if it is 100% full.
   • If so, proceed to Step 3.
   • If not, check if there are any drives that do not have more than 300MB free (minimum requirement to use VSS).
3. Right-click a drive, select Properties, and then select the Shadow Copy tab.
4. Ensure all Shadow Copies are disabled, and set to no limit on all drives.
5. Go to the SRP partition, and assign it drive letter B:.
6. Open the B: drive via Disk Manager, and then search for the System Volume Information folder. Note: If needed, change the folder options so that you can view hidden files, folders, and drives.
7. Right-click the System Volume Information folder, and select Properties.
8. On the Security tab, click Edit, and then add the Everyone group with full control to the folder.
9. Open the System Volume Information folder (you should see log files that are full), open a command prompt running as an Administrator, and then type the following commands to unload the filter driver.
   • B:
   • B:\>FLTMC UNLOAD AAFSFLT
10. Navigate to the System Volume Information folder, and type the following commands:
    • B:\>CD System Volume Information
    • B:\System Volume Information>DEL AALOG_* (this will delete all the log files and then recreate a new one)
    • B:\System Volume Information>CD\
    • B:\>FLTMC LOAD AAFSFLT
11. Close the command prompt window.
12. In Windows, right-click the System Reserve folder, and remove the Everyone Group.
13. In the Disk Manager, remove the B: drive (and click Yes when the window prompts with a warning).