i have an issue with my wsus server, when i run a report for a specific update i got that its installed for some clients, not installed for other and for the remain i got no status.
when i check the client i find that the required update is installed.
if i check another one from the clients with "no status " i found that its not installed.
please suggest or drop any comment, since i got this entire environment after the previous admin resign with no document left.
Are you sure that it is the exact same update? It could be that a different update has superseded the one that you are looking at, making it not installed but also not needed.
Because computers normally report their status to the WSUS server only once per day (perhaps less if they ever get turned off or taken home), a computer will ordinarily show "No Status" for any update that is new since the last time it has reported status to the server.
WSUS can be frustrating in that it will show you problems without providing any explanation, nor any real-time means of resolution. It is imperfect, but it is also far better than nothing.
On what date was the specific update in question released? Are the computers that report "no status" for this update reporting no status for a large number of updates over multiple dates, or just the updates released on the most recent Patch Tuesday? Are these computers configured for automatic updates or do they require manual intervention?