VSAFE Err Msg: "...Is Trying to Modify System Memory" (96827)

The information in this article applies to:
    Microsoft MS-DOS operating system 6.0
    Microsoft MS-DOS operating system 6.2
    Microsoft MS-DOS operating system 6.21
    Microsoft MS-DOS operating system 6.22

This article was previously published under Q96827


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


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.


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.

Modification Type: Major Last Reviewed: 11/22/1999
Keywords: KB96827