Source error (code 87). The parameter is incorrect.

[siringo]

Hello.
Hoping someone can help me out with this.

I'm trying to do a mirror backup of a Virtual Box VM. The backup does all files except the VHD file.

I've created an include filter, but this has made no difference.

This seems to be the most relevant part of the log file:

[5/12/2022 2:23:58 PM] Folders found to backup: 0
[5/12/2022 2:23:58 PM] Files found to backup: 1 (35.04 GB)

[5/12/2022 2:23:58 PM] Preparing shadow copy
[5/12/2022 2:24:23 PM] Shadow copy created for drives C:
[5/12/2022 2:25:23 PM] Warning: Skipping file C:\Users\xxxx\VirtualBox VMs\W10 SUPPT\W10 SUPPT.vhd
Source error (code 87). The parameter is incorrect. (\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy15\Users\xxxx\VirtualBox VMs\W10 SUPPT\W10 SUPPT.vhd).
Files skipped: 1

Thanks for any help.

[siringo]

I forgot to mention that the VM is powered off.

[Adrian (Softland)]

Hi,

Do you have the same problem if you uncheck the "Backup open files" option from Backup Properties->Advanced page?

[siringo]

Yes, I get the same error:

[12/12/2022 11:38:16 AM] Writing to destination file D:\VBOX Backup\C\Users\xxxx\VirtualBox VMs\W10 SUPPT\W10 SUPPT.vhd returned error 87. Will retry after sleeping 60 seconds
[12/12/2022 11:39:16 AM] Warning: Skipping file C:\Users\xxxx\VirtualBox VMs\W10 SUPPT\W10 SUPPT.vhd
Source error (code 87). The parameter is incorrect. (\\?\C:\Users\xxxx\VirtualBox VMs\W10 SUPPT\W10 SUPPT.vhd).
[12/12/2022 11:3

It's backing up everything except the .VHD file which is 35GB in size.

I'm doing a mirror backup as I just want a copy of the VM on my USB disk.

[siringo]

Fixed.

My USB disk was formatted as FAT32. The VHD filesize was outside the spec's of the FAT32 FS.

[Adrian (Softland)]

Hi,

I'm glad you found the problem.