Malwarebytes Anti-Malware: BusinessMessaging.exe System Error can’t find qt5widgets.dll missing / The program can’t start because Qt5Widgets.dll is missing from your computer. Try reinstalling the program to fix this problem.

 

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The following error message is displayed at startup:

BusinessMessaging.exe – System Error

The program can’t start because Qt5Widgets.dll is missing from your computer. Try reinstalling the program to fix this problem.

This can be caused following the uninstallation of Malwarebytes Anti-Malware from a domain joined computer.

To resolve:

(x86)
Open Registry Editor
Browse to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Review and delete the Malwarebytes Anti-Malware key

(x64)
Open Registry Editor
Browse to HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run
Review and delete the Malwarebytes Anti-Malware key

or from an elevated PowerShell prompt:

(x86)
Remove-ItemProperty -Name ‘Malwarebytes Anti-Malware’ -Path ‘HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run’

(x64)
Remove-ItemProperty -Name ‘Malwarebytes Anti-Malware’ -Path ‘HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run’

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8 thoughts on “Malwarebytes Anti-Malware: BusinessMessaging.exe System Error can’t find qt5widgets.dll missing / The program can’t start because Qt5Widgets.dll is missing from your computer. Try reinstalling the program to fix this problem.”

  1. I had no Malwarebytes entry in the registry, however under “msconfig” there was a start up entry remaining from an uninstall of Malwarebytes. Unticking the entry and restarting fixed the error message. Win 7 Pro x64

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