Distribution Manager does not have sufficient rights to access the content source folder. Verify that the site server computer ...

1. Distribution Manager does not have sufficient rights to access the content source folder. Verify that the site server computer account has a minimum of Read access to the content source folder.
2. The content source folder contains files with long file names and the total length of the path exceeds the maximum length supported by the operating system. Reduce the number of folders defined for the content, shorten the filename, or consider bundling the files using a compression utility.