Microsoft KB Archive/97704

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NOINT Virus Leaves 17 Files on MS-DOS 6.0 and 6.2 Disks

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Q97704

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The information in this article applies to:


 * Microsoft MS-DOS operating system versions 6.0, 6.2, 6.21, 6.22
 * Microsoft Office for Windows, versions 4.0, 4.2
 * Microsoft Word for Windows, version 6.0a

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SUMMARY
If your computer is infected with the NOINT virus and you try to install MS-DOS 6.x or an Microsoft Office 4.2 program, your 3.5-inch installation floppy disks are damaged if the write-protected notch is in the closed (not write-protected) position. The disks are left with 17 files on each disk and are unusable. When you try to install an Office 4.2 product, you receive the following error message:

  SETUP.EXE could not be found

MORE INFORMATION
The 3.5-inch MS-DOS and Microsoft Office disks have write-protected tabs that enable you to write to the disks. The 5.25-inch disks are permanently write protected.

If you were using MS-DOS disks, each infected disk may contain a file named &quot;S<MSDOS 5.0.&quot;

The following table shows the correct number of files for Disk 1 of each product for the 3.5-inch disk sets.

Product Correct Number of Files
MS-DOS 6.0 63 MS-DOS 6.2 61 MS-DOS 6.21 60 Microsoft Office 60

The NOINT virus is a boot-sector virus that can result in damaged file linkage, changes to system run-time operation, and changes to the boot sector.

To obtain new installation disks, contact Microsoft Sales Information Center (MSIC) at 1-800-426-9400.

To remove the NOINT virus, us Microsoft Anti-Virus included with MS-DOS 6.0 and later, or use a third party program.

Additional query words: 6.22 6.20 6.00 no int MS-Office S MSDOS5.0 ACMSETUP.EXE 6.00a

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