Do we need to include this folder in backup? Is it important? (C:\users\xxxx\appdata\local\microsoft\office\15.0\officefilecache)

Hi,

As far as know, the OfficeFileCache is a temporary location used to sync your local cache with SharePoint when documents are updated from your client, or when you open the documents from the browser. If you sync files to the local folder from OneDrive for Business, it will also sync to the Local OfficeFileCache folder.

Thus, if you have backup the files, you can delete them.

For more detail information, please refer to the following links:

https://community.office365.com/en-us/f/154/t/248984

https://community.office365.com/en-us/f/148/t/257657

Regards,

George Zhao
TechNet Community Support

Thanks for your reply. Everyday I am getting warning messages in backup tool related to officefilecache files, so my question is whether I need to include this folder in backup or not.

As I said above, if you have backup the files, I think we do not need to backup this fold officefilecache  folder, and we can delete it.

Regards,

George Zhao
TechNet Community Support