# OneDrive error “The tag present in the reparse point buffer is invalid”

This warning may appear if you are using the OneDrive Files On-demand feature. If you have chosen to backup the contents of your OneDrive folder, the backup client may be trying to backup placeholder junction files/folder kept by the On-demand feature.

The message: "`The tag present in the reparse point buffer is invalid`" indicates that some of those junction files are likely in a damaged state, this could happen if OneDrive had crashed or terminated improperly at some point.

Usually this can be fixed by running chkdsk.exe from an elevated command prompt by running '`chkdsk c: /f`'.

Be aware that running this repair may require a system reboot.

You may also want to [see this article](https://docs.eazybackup.com/documentation/error-access-to-the-cloud-file-is-denied-backing-up-onedrive) to disable the OneDrive Files On-demand feature so that you can backup files stored on OneDrive:

{% content-ref url="../documentation/error-access-to-the-cloud-file-is-denied-backing-up-onedrive" %}
[error-access-to-the-cloud-file-is-denied-backing-up-onedrive](https://docs.eazybackup.com/documentation/error-access-to-the-cloud-file-is-denied-backing-up-onedrive)
{% endcontent-ref %}

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