Error While Registering msjtest40.dll
On some Windows 11 systems, attempting to install a DXLab application produces this error message:
An error occurred while registering the file C:\Windows\System32\msjtes40.dll
This is the result of a defect in Windows: msjtes40.dll should be installed in C:\Windows\SysWOW64, not in C:\Windows\System32 . Furthermore, the version of msjtes40.dll present in C:\Windows\SysWOW64 is not the version distributed with DXLab applications.
To correct this, replace msjtes40.dll and direct Windows to register it:
Take ownership of msjtes40.dll and grant full control to your administrator username, or to Administrators
- In Windows Explorer, navigate to C:\Windows\SysWOW64
Right-click on the entry for msjtes40.dll and select Properties from the popup menu
In the msjtes40.dll Properties window, select the Security tab and click the Advanced button in its lower-right corner
In the Advanced Security Settings for msjtes40.dll window, click the Change link to the right of the word Owner
In the Select User or Group window, enter your administrator username or Administrators, and then click the OK button
If the Change button is grayed out, click the View button
Click the Edit button
Select the entry for administrator username or Administrators, and check Full control
Click the Apply Changes button
- in the C:\windows\SysWOW64 folder, delete the file msjtes40.dll
download http://www.dxlabsuite.com/msjtes40.zip and extract the file msjtes40.dll it contains into C:\Windows\SysWOW64
- Direct Windows to open a Command window with administrative privileges
press CTRL-SHIFT-ESC to open the Windows Task Manager
click on the Task Manager's Run new task button
check the Create this task with administrative privileges box
in the Open: textbox, type CMD.exe and then click the OK button.
- In the Command window that appears, type this command and then strike the Enter key:
- C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\msjtes40.dll
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Installing DXLab Applications on Microsoft Windows 7, Windows 8, Windows 10, or Windows 11