Microsoft KB Archive/96827

= VSAFE Err Msg: &quot;...Is Trying to Modify System Memory&quot; =

Article ID: 96827

Article Last Modified on 11/22/1999

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APPLIES TO


 * Microsoft MS-DOS 6.0 Standard Edition
 * Microsoft MS-DOS 6.2 Standard Edition
 * Microsoft MS-DOS 6.21 Standard Edition
 * Microsoft MS-DOS 6.22 Standard Edition

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This article was previously published under Q96827



SYMPTOMS
Each time you start your computer, you receive an error message stating that the system memory is being modified.



CAUSE
If you continually receive this error message, either you are running VSAFE with the /2+ parameter (which checks for programs that load as memory resident), or one of your programs is causing the error because it does not use the MS-DOS Interrupt 21 application program interface (API) function to load as memory resident.



WORKAROUND
To work around this problem, change the VSAFE /2+ parameter to /2-. This disables the memory check for standard memory-resident programs.

If the warnings continue, note the program that causes the error message. This program is not using the standard method to load as a memory-resident program (Int 21h). Once you note which program is causing the problem and verify that it is not infected with a virus, load VSAFE after that program in the AUTOEXEC.BAT file.

Additional query words: 6.22 6.00 win31 6.20

Keywords: KB96827

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