The problem can be solved by uninstalling the Microsoft Security Essentials. Another reason for this might be an infection that changed the file structure of Microsoft Security Essentials.
Usually even if you uninstall the security applications, they still keep conflicting with other security programs because the installer didn’t properly clean the files. Sometimes there might be Antivirus applications conflicting with the Microsoft Security Essentials. The issue is mainly associated with the Microsoft Security Essentials. but this solution is specifically for the users facing the error either when they turn on their computer or when they try to start Microsoft Security Essentials. Keep in mind that error code 0x80040154 can be shown at various stages during the use of Windows for example when you open a mail application or skype etc. The error also prevents the users from opening or uninstalling the Microsoft Security Essentials.
The error 0x80040154 can present itself with messages related to “Microsoft Security Essentials”. Most of the victims of this error says that there systems were working fine during the last session. The error code 0x80040154 can be shown without any prior warnings.
