Invalid characters in SharePoint naming conventions


This article lists the characters that you cannot use in the following names in Microsoft SharePoint:

  • Site names
  • Folder name
  • Server names
  • File names

Site names, subsite names, or site group names

  • You cannot use the following characters anywhere in a site name, in a subsite name, or in a site or Active Directory group name:-
    • Tilde (~)
    • Number sign (#)
    • Percent (%)
    • Ampersand (&)
    • Asterisk (*)
    • Braces ({ })
    • Backslash (\)
    • Colon (:)
    • Angle brackets ([ ])
    • Question mark (?)
    • Slash (/)
    • Plus sign (+)
    • Pipe (|)
    • Quotation mark (“)
  • You cannot start a site name, a subsite name, or a site group name with an underscore (_) character or with the period (.) character.
  • When you create a site name, a subsite name, or a site group name, you cannot use strings that were already used to name managed paths.
  • You cannot use the period character consecutively in the middle of a site name, a subsite name, or a site group name.
  • You cannot use the period character at the end of a site name, a subsite name, or a site group name.

Folder names

  • You cannot use the following characters anywhere in a folder name or a server name:
    • Tilde
    • Number sign
    • Percent
    • Ampersand
    • Asterisk
    • Braces
    • Backslash
    • Colon
    • Angle brackets
    • Question mark
    • Slash
    • Pipe
    • Quotation mark
  • You cannot use the period character consecutively in the middle of a folder name.
  • You cannot use the period character at the end of a folder name.
  • You cannot start a folder name with a period character.

File names

  • You cannot use the following characters anywhere in a file name:
    • Tilde
    • Number sign
    • Percent
    • Ampersand
    • Asterisk
    • Braces
    • Backslash
    • Colon
    • Angle brackets
    • Question mark
    • Slash
    • Pipe
    • Quotation mark
  • You cannot use the period character consecutively in the middle of a file name.
  • You cannot use the period character at the end of a file name.
  • You cannot start a file name by using the period character.
  • In addition, file names and folder names may not end with any of the following strings:
    • .files
    • _files
    • -Dateien
    • _fichiers
    • _bestanden
    • _file
    • _archivos
    • -filer
    • _tiedostot
    • _pliki
    • _soubory
    • _elemei
    • _ficheiros
    • _arquivos
    • _dosyalar
    • _datoteke
    • _fitxers
    • _failid
    • _fails
    • _bylos
    • _fajlovi
    • _fitxategiak

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