For devices running Windows 7 or Windows Server 2008 R2, to update your Malwarebytes product to the latest version, you must have the Microsoft™ 2019-09 Security Update installed. For details, see 2019 SHA-2 Code Signing Support requirement for Windows and WSUS.
To get the Microsoft 2019-09 Security Update, see SHA-2 code signing support update for Windows Server 2008 R2, Windows 7, and Windows Server 2008: September 23, 2019.
For devices not running the Windows 2019-09 Security Update
If you cannot apply this Microsoft update or choose not to update, you can continue to install or use your current Malwarebytes version which automatically remains SHA-1 code signing compliant.
By not updating to the Windows 2019-09 Security Update, endpoints will continue to receive protection updates, but will not receive software updates.