MFC42.DLL Error

Last updated on 3/31/2016

The information in this article applies to:`        

  • SONAR 5
  • SONAR 4
  • SONAR 3
  • SONAR 2
  • SONAR 1
  • SONAR Home Studio Version 4 

The problem lies in a corrupted Windows Registry entry which controls the display settings of the program. This can occasionally happen through normal use or it may occur after another program has updated windows system files.

  1. Choose Start| Run, and type regedit. Click Ok.
  2. Backup your registry by choosing File > Export. Choose an Export Range of 'All' and save the files as 'backup' to floppy disk.
  3. Clicking the plus signs next to each folder, follow the path below: HKEY_CURRENT_USERS/Software/Cakewalk Music Software/ SONAR/(version Number)
  4. Delete all folder labeled Toolbar. DO NOT DELETE ANYTHING ELSE!
  5. Close the Registry Editor,and restart your computer.
  6. Now launch Cakewalk and the Problem should be resolved. 


Cakewalk // Support // Knowledge Base // MFC42.DLL Error
Copyright © 2022 Cakewalk, Inc. All rights reserved
Sitemap | Privacy Policy | Legal