Hi All,
Brandon here from the dedicated SM Support team 😊.
I would recommend opening a Support case (Dashboard > (?) > Get help & cases > Support Center > SM Systems Manager > Submit a case) as Support can provide a detailed analysis of what we believe could be causing this, and potential next steps. In short, our Agent download/ SHA-1 hash value has not changed since the initial release of 4.2.2 however we did start to receive cases in relation to this issue more recently.
Thanks All!