NOTE: Jet40SP3.exe was updated on October 11, 1999. If you previously installed this update and would like to use the stricter security control provided in the updated Mstext40.dll, run the installed Mstext40.reg file. To run the Mstext40.reg file, locate the file on your system and double-click it.
There could be a possible security risk when someone uses the Text IISAM to
modify any of the system text files, such as Autoexec.bat, Config.sys,
System.ini, and so on.
After you install the updated version of Jet, you will only be able to use the Text IISAM to update text files with the following extensions:
These are the default extensions that are added to the registry key listed in the "Resolution" section. The
Value data for the registry key is:
!txt,csv,tab,asc,htm,html
In the first release of Jet 4.0 SP3, you were not be able to use the
Text IISAM to update text files with the following extensions:
These are the default extensions that were added to the registry key listed in the "Resolution" section with the first release of Jet 4.0 SP3. The
Value data for the registry key was:
bat,cmd,ini,sys,inf,vbs,js
NOTE: The first release of Jet 4.0 SP3 did not provide the use of an exclamation mark (!). When you place an exclamation mark at the beginning of the
Value data, you can modify only files with the extensions listed. When you do not place an exclamation mark at the beginning of the
Value data, you cannot modify files with the extension listed.
With the Jet 4.0 Text IISAM, you cannot set the registry key to an empty string. Therefore, if you do not want to block access to any system text files, you should set the registry key to a binary file name extension. For example, you can use .exe.
NOTE: Microsoft Access users may receive the following error when trying to import a text file that is not one of the enabled extensions:
Can't Update. Database is read-only.
To resolve the error, either rename the file extension to one of the
enabled extension types or modify the
DisabledExtensions registry key using the methods in this article.