Article ID: 121007 - View products that this article applies to.
The use of 8.3 file names and directories for all long file names and directories on NTFS partitions may decrease directory enumeration performance. An 8.3-compliant file name refers to MS-DOS file-naming conventions. These conventions restrict file names to eight characters and optional extensions to three characters.
This article describes a method of disabling 8.3 file name creation on all NTFS partitions.
Note: Although disabling 8.3 file name creation increases file performance under Windows, some applications (16-bit, 32-bit, or 64-bit) may not be able to find files and directories that have long file names.
Windows Vista, Windows Server 2008, Windows 7, Windows Server 2008 R2, Windows 8, and Windows Server 2012To disable 8.3 name creation on all NTFS partitions, type fsutil.exe behavior set disable8dot3 1 at an elevated command prompt, and then press Enter.
This operation takes effect immediately (no restart required).
When a volume is not specified, the operation updates the registry value:
For more information about FSUTIL.EXE 8dot3name, see the following TechNet article:
For more information about the registry setting to disable 8.3 names, see the following TechNet article:
Windows XP and Windows Server 2003To disable 8.3 name creation on all NTFS partitions, type fsutil.exe behavior set disable8dot3 1 at a command prompt, and then press Enter. A restart may not be required, but it is recommended.
Windows 2000 and Windows NTTo disable 8.3 name creation on all NTFS partitions, follow these steps.
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/322756/ )How to back up and restore the registry in Windows
Article ID: 121007 - Last Review: April 11, 2014 - Revision: 4.0