File naming restrictions in SharePoint

Firstly, full credit for this information goes to Mischa Oudhof and this sysadmin blog for this really useful post in 2010! I thought i’d write it up here just for my own sanity (and incase that page were to ever not exist) plus add a few extra bits of my own.

So recently a user was trying to upload multiple documents into SharePoint 2010 by copying/pasting using file explorer for the destination library.  When copying across the files they received something like this message:

filename-error

What are the restrictions?

There are a whole load of restrictions when it comes to file name, length, characters within SharePoint. This affects site collections, sub-sites libraries or lists. Here are some of the more general restrictions:

  • File and folder name lengths can’t exceed 128 characters in both WSS 2.0 as WSS 3.0
  • Link list items can’t exceed 256 characters
  • The entire path of files can’t exceed 260 characters

Here are some, more specific restrcitions again applying to site collections, sub-sites, libraries or lists:

  • Can’t be longer than 128 characters
  • Can’t use: ~ # % & * { } \ : < > ? / + | ”
  • Can’t use the period character consecutively in the middle of a file name (blah…blah.docx)
  • Can’t use the period character at the end of a file name
  • Can’t use the period character at the start of a file name
  • Can’t end with:

    .files

    _files

    -Dateien

    _fichiers

    _bestanden

    _file

    _archivos

    -filer

    _tiedostot

    _pliki

    _soubory

    _elemei

    _ficheiros

    _arquivos

    _dosyalar

    _datoteke

    _fitxers

    _failid

    _fails

    _bylos

    _fajlovi

A deep dive into all the potential restrcitions can be found in the msdn blog here.

Things have changed in Office 365…

Microsoft announced in 2017 that the old maxpath limit has been expanded to 400 Unicode code units. Microsoft also announced more URL improvements for the support of # and % characters.

New SharePoint team site

References

http://www.sysadminsblog.com/microsoft/file-name-length-and-character-restrictions-for-sharepoint/  – Original write up by Mischa Oudhof of Sysadminblog.com

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s