# Duplticati and VSS are bad friends
**URL:** https://forum.duplicati.com/t/duplticati-and-vss-are-bad-friends/7884
**Category:** Support
**Created:** [August 26, 2019, 3:08pm UTC](https://forum.duplicati.com/t/duplticati-and-vss-are-bad-friends/7884 "2019-08-26T15:08:03Z")
**Posts on this page:** 1
**Showing post:** 6
### Author:  [@xblitz](https://forum.duplicati.com/u/xblitz)
#### Post date: [August 26, 2019, 5:47pm UTC](https://forum.duplicati.com/t/duplticati-and-vss-are-bad-friends/7884/6 "2019-08-26T17:47:37Z")
Another way is run it as a service:
> [@Migrating from User to Service install on Windows](https://forum.duplicati.com/t/migrating-from-user-to-service-install-on-windows/660):
>
> Thanks to @martijnsmith for giving me the boost needed to “how-to” this! If you want to run Duplicati as a Windows service instead of under a specific user account OR maybe you find that you keep getting errors such as the following, it could be that you’re running Duplicati under a user install for a non-administrator user. System.UnauthorizedAccessException: Access to the path '\' is denied. Firstly, congratulations on not doing everyday work as an administrator! slight_smile …
As my little experience duplicati works fine with VSS even if a couple of times I obtain a warning from backkup job but this happen because the backup job start running while OS made a snapshot (in my system I scheduled a task who create new snapshot every hour - so duplicati should backup data up to date).
If I understand correctly duplicati can’t create a snapshot before start a backup job but only access to the most recent snapshot available. Can anyone confirm this?
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