Cannot Manually Extract Files from Cabinet Files

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Article ID: 171241
This article was previously published under Q171241
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Symptoms

When you use the Extract tool to manually extract a file from an Internet Explorer 4.0 cabinet file, you may receive the following error message:
Cabinet <cabinet>.cab
Extracting <filename>
ERROR: Unknown compression type in cabinet file <cabinet>.cab

Cause

This error message can occur if you are not using the version of the Extract tool (Extract.exe) included with Internet Explorer 4.0.

Resolution

To resolve this issue, extract the updated Extract.exe file from the Setupw95.cab cabinet file to the Windows\Command folder, and then try to extract the file again.

NOTE: The Setupw95.cab cabinet file uses an earlier compression scheme and works with the older Extract tool.

To extract the updated Extract.exe file, follow these steps:

NOTE: If you are manually extracting a file from an Internet Explorer 5 cabinet file and encounter this problem, the updated EXTRACT.EXE can be found in the GSETUP95.CAB. For Internet Explorer 5, the following command is used to extract the new file:

extract gsetup95.cab extract.exe /l c:\windows\command

  1. Click Start, point to Programs, and then click MS-DOS Prompt.
  2. Type the following command at a command prompt, and then press the ENTER key:
    cd\
  3. Type the following command at a command prompt, and then press the ENTER key:
    cd\intern~1.0se
    NOTE: This assumes that the Internet Explorer 4.0 Setup folder is in the root of the C drive. If you specified a different location for the Internet Explorer 4.0 Setup folder during Setup, change to that location before you continue with step 4.
  4. Type the following command at a command prompt, and then press the ENTER key:
    extract setupw95.cab extract.exe /l c:\windows\command
When you are prompted to overwrite the Extract.exe file, press the Y key.

For additional information about using the Extract tool, see the following article in the Microsoft Knowledge Base:
129605 How to Extract Original Compressed Windows Files

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Article ID: 171241 - Last Review: November 1, 2013 - Revision: 4.0
Keywords: 
kbnosurvey kbarchive kberrmsg KB171241

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