SharePoint files returns an error after transferring the files from Network-attached storage

New Contributor

Hi all, 


I have migrated some files from a Network-attached storage to SharePoint Online. All files are in the SharePoint now but when trying to open them, there I get error messages of file corrupt.

The picture attached is an example of the error while opening an excel file from the SharePoint.

Please any help. Thank 


5 Replies
Hello, what did you use to migrate these files?
The migration was done using the Network-attached storage (NAS) migration option
Did you use OneDrive sync to sync files to SharePoint online or any migration tool like SPMT or Sharegate?
I did not use any of the above, the option to migrate to SharePoint was available in the NAS portal and that is what I used. I did not install or download any other software for this.
best response confirmed by Tchesco (New Contributor)
As Bharath says, I would use Microsoft tools to transfer the files, for example have a look at Migration Manager