Strange error message when an author tries to upload a doc

One of our authors is getting a strange error message when he tries to upload his paper. It is a 15.6 MB rtf document. Our limit is set at 35MB. When I log in as the user I have no trouble.

This is the error he sees:
Fatal error: Maximum execution time of 60 seconds exceeded in C:\Inetpub\wwwroot\osu\index.php on line 59

Has anyone got any ideas that might help? Thank you!

It sounds like the user is coming across a slow connection and it takes more than 60 seconds to upload the 15.6MB. See the php.ini directives of max_execution_time and max_input_time.

A similar thread is: