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"Invalid characters" error when you sync files from Windows Explorer to OneDrive for Business

This article contains information that applies when you use the OneDrive for Business sync client (groove.exe).

Note To determine which OneDrive sync client you're using, see the following Microsoft website:
When you use Microsoft OneDrive for Business (formerly Microsoft SkyDrive Pro) to sync files from Windows Explorer to a Microsoft SharePoint site, some files may not sync as expected. Instead, a red X is displayed on the file icon in Windows Explorer and then you experience one of the following problems:
  • In the Microsoft Office Upload Center, you receive the following error message:
    Upload Failed
    Invalid characters

    Sceen shot of upload failed status

  • OneDrive for Business - Sync problems appears in the notification area. When you click View sync problems, you receive the following message:

    X item can’t be synced with OneDrive for Business

    Note X is the number of files that OneDrive for Business is trying to sync.

    Under the Error column, the following message is also present:

    This file name contains invalid characters.
Note This issue occurs if you're syncing files to Microsoft Office 365 SharePoint Online or Microsoft SharePoint Server 2013.
To resolve this issue, delete any invalid characters from the file name of the Windows Explorer file that you're trying to upload to the SharePoint site.

For more information about the characters that can cause this specific issue, see the “Invalid characters” section in the following Microsoft Knowledge Base article:
2933738 Restrictions and limitations when you sync SharePoint libraries to your computer through OneDrive for Business
After you have deleted unsupported characters from the file name, the file will sync with OneDrive for Business.
This issue occurs because the characters that are listed in the "Solution" section are not supported by OneDrive for Business.

For more information about OneDrive for Business, go to the following Microsoft website:

Still need help? Go to the Office 365 Community website.

Artikelnummer: 2813150 – Letzte Überarbeitung: 03/08/2016 22:13:00 – Revision: 22.0

Microsoft SharePoint Online, Microsoft SharePoint Server 2013, OneDrive for Business

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