MSST-001 shows as missing, even after deploying a patch deployment to the target.
MSST-001 is designed to always be missing.
The MSST-001 ‘patch’ is specifically used for Custom Actions and scanning for this patch type is setup in the filtering tab of the patch scan template.
Scanning for this patch type allows you to perform Custom Actions even if you are already fully patched. It does this by scanning for a specific QNumber and patch (QSK2745, MSST-001) that will never be found as installed on the target machine.
We recommend that you do not enable scanning for this patch type unless you are attempting to push out a Custom Action.