Topics Map > File Management

Learn@UW - Special Characters in File and Folder Names

This document describes what special characters, besides letters and digits (A-Z, a-z, 0-9), are allowed in file and folder names. This applies to all tools in the Learn@UW application where files and folders may be uploaded or created: for example, the Dropbox and Locker tools.

The following special ASCII characters are allowed in file and folder names:

! # $ % & ' ( ) + , - .
; = @ [ ] ^ _ ` { } ~

UNICODE characters that are not ASCII characters (with codes 128 - 65535) are also allowed in files and folder names.

These special ASCII characters are NOT allowed in file and folder names:

" * / : < > ? \ |

Problems will arise if file or folder names contain any of these characters.

If you attempt to upload a file containing any of these characters, you will receive an appropriate message. You will then have to rename the file before you can successfully upload it.

Notes:

  • You may not begin a file or folder name with a space (blank). Any leading blanks will automatically be stripped from the file or folder name.

    Otherwise, spaces are allowed in file and folder names are allowed and no longer seem to cause problems. They have caused problems in the past. You may wish to use underscores ( _ ) instead.

  • All file names must have a valid extension. It is good practice to only use periods in a file name between the root name and the extension. In particular, avoid using two consecutive periods ( .. ) in a file name. The occurrence of two consecutive periods may cause problems.

  • If a file name that contains semicolons ( ; ) is uploaded into a Locker or Dropbox folder, the semicolons will be stripped out of the name.
  • Pound signs ( # ), ampersands ( & ), braces ( { } ), and apostrophes ( ' ) are now allowed in file and folder names and no longer cause problems. They have caused problems in the past.

  • Although we have not received reports of any non-ASCII UNICODE characters causing problems in file and folder names, some of these characters may not display uniformly across all environments.

Refer to Learn@UW - Troubleshooting Problems when Accessing Files from the Locker if you are experiencing problems accessing files from your locker or Learn@UW - Troubleshooting Problems when Accessing Files from a Dropbox Folder if you are experiencing problems accessing files from a dropbox folder.




Keywords: learn@uw learnuw desire2learn d2l special character file name folder root allowed ascii unicode non-ascii underscore space blank period dropbox locker   Doc ID: 2533
Owner: Jay F.Group: Learn@UW Utility
Created: 2004-02-19 19:00 CDTUpdated: 2012-02-09 14:37 CDT
Sites: DoIT Help Desk, Learn@UW Madison, Learn@UW Utility