SkyDrive Pro Upload Failed
Invalid Characters Or File Type Blocked
When syncing your local files with SkyDrive Pro (OneDrive for Business) in Office 365 SharePoint Online you may get the
errors in the Microsoft Office Upload Center "Upload Failed Invalid characters" and "Upload Failed File type blocked".
SkyDrive Pro blocks files if they contain any of the following characters in the file name \ / : * ? " < > | # %. SkyDrive Pro also blocks files from upload that end with certain extensions. SkyDrive Pro blocks these characters and file extensions to reduce the opportunities for viruses and malware to spread in the workplace. The problem is that these characters and file types are quite common on the average company file server.
- SkyDrive Pro shows a red X against each of the files that have upload problems in Windows Explorer.
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- Right click on one of these files and select "View sync problems..." from the SkyDrive Pro menu to see the cause of the error.
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How To Work Around Failed Uploads
The list of invalid characters and file types that are blocked by SkyDrive Pro is fixed and cannot be changed in Office 365. You will need to workaround these restrictions in order to migrate your files.
All invalid characters in your folder and file names will need to be removed or renamed, for example renaming a # character to _. Files that end with blocked file extensions should be renamed.
Identifying problem files can be an issue if you have thousands to upload. You may find a tool helpful. Files To Go, our file migration tool for Office 365, automatically handles these issues which should simplify your migration to Office
365. A free trial of Files To Go is available for you to try today.
This article was last updated on 21st November 2013.
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