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Microsoft does not support the use of FAT file systems or FAT32 file systems with Internet Information Services

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Microsoft Knowledge Base Article

This article contents is Microsoft Copyrighted material.
©2005-©2007 Microsoft Corporation. All rights reserved. Terms of Use | Trademarks
Article ID: 907733 - Last Review: December 3, 2007 - Revision: 1.5

Microsoft does not support the use of FAT file systems or FAT32 file systems with Internet Information Services

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INTRODUCTION

We do not support the use of FAT file systems or of FAT32 file systems with Microsoft Internet Information Services (IIS).
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MORE INFORMATION

Web Server administrators who use Internet Information Services and FAT file systems or FAT32 file systems should convert the file systems to NTFS file systems. FAT file systems and FAT32 file systems are available on Microsoft Windows operating systems for legacy and compatibility reasons for some types of applications. However, FAT file systems and FAT32 file systems do not have the modern security features that we require to help make the Web server secure. NTFS file systems provide several security features that we require for the Web server and that FAT file systems and FAT32 file systems do not provide.

Therefore, we recommend that all Web server administrators convert all FAT file systems or FAT32 file systems to NTFS file systems.
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REFERENCES

For more information, visit the following Microsoft Web sites:

IIS security checklist
http://www.microsoft.com/technet/prodtechnol/windows2000serv/reskit/iisbook/c09_iis_5.0_security_checklist.mspx?mfr=true (http://www.microsoft.com/technet/prodtechnol/windows2000serv/reskit/iisbook/c09_iis_5.0_security_checklist.mspx?mfr=true)
IIS 6.0: Warnings received after upgrade
http://support.microsoft.com/default.aspx?scid=kb;en-us;332108 (http://support.microsoft.com/default.aspx?scid=kb;en-us;332108)
How to convert FAT disks to NTFS
http://technet.microsoft.com/en-us/library/bb456984.aspx (http://technet.microsoft.com/en-us/library/bb456984.aspx)
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APPLIES TO
  • Microsoft Internet Information Server 4.0
  • Microsoft Internet Information Services 5.0
  • Microsoft Internet Information Services version 5.1
  • Microsoft Internet Information Services 6.0
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Keywords: 
kbinfo kbtshoot KB907733
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