Resolve M3plugin.dll Missing Error

M3plugin.dll is a My Web Search Plugin from By default, the m3plugin.dll file is located in C:\ProgramFiles\mywebsearch\bar folder.

M3plugin.dll missing error

When you start your computer, you may receive an error message similar to the one given below:

Error loading

specified module could not be found.”


To repair the m3plugin.dll missing error, perform either of the following tasks:

Task 1: Remove Mywebsearch from startup Items list

  1. Click the Start menu and then select the Run utility.
  2. Type the msconfig command in the Open box, and then click OK.
  3. Next, click the Startup tab in the System Configuration Utility dialog box.
  4. Clear the checkbox before m3plugin.dll or Mywebsearch.
  5. Next click Apply to save the changes and then click OK.
  6. Restart your PC.

If you still get the error, complete the steps illustrated in task 2.

Task 2: Remove registry entries related to m3plugin.dll

Note: The steps shown below require you to edit the registry. Incorrectly modifying the registry may cause serious damage to your registry and system. Do not edit the registry if you are not comfortable working with it. Further, always make a registry backup before editing the registry. You can back up the registry manually or use the help of a reliable registry cleaning utility, such as RegServe.

  1. Go to Start menu and click Run.
  2. Type regedit in the Open box and press Enter.
  3. Next in the Registry Editor window, click Edit and then click Find.
  4. Type m3plugin.dll in the box next to Find What and press the Find Next button.
  5. Right-click m3plugin.dll entries that results show and click Delete.
  6. Next, browse to the following registry entry:
    HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion \ Winlogon
  7. Locate and double-click the registry key Shell in the right-pane of the Registry Editor window.
  8. Ensure that the value of the Shell key is Explorer.exe. If you see some other value after Explorer.exe, delete the extra value. For instance, if the value of Shell key is Explorer.exe C:\PROGRA~1\MYWEBS~1\bar\2.bin\m3plugin.dll, delete C:\PROGRA~1\MYWEBS~1\bar\2.bin\m3plugin.dll.
  9. Next, double-click the key Userinit in the right-pane of registry editor window. Ensure the value of this key is C:\WINDOWS\system32\userinit.exe. If there is an extra value after C:\WINDOWS\system32\userinit.exe, delete it.
  10. Next, click the File menu and select Exit.
  11. Restart your computer.

A common cause of m3plugin.dll errors is malware infection. Malware programs may corrupt or delete the copy of the m3plugin.dll file on your computer and cause m3plugin.dll missing errors. To fix m3plugin.dll missing errors occurring due to malware programs, run a malware scan on your complete system, using advanced antimalware tools, such as STOPzilla Antivirus and Spyware Cease.