Recently when trying to update the server with June CU, ran into a weird scenario. After June CU was installed and all the servers rebooted, when trying to run the psconfig on WFEs or App Servers, we saw the following error. And there is no work-around on this.

C:\Windows\system32>"C:\Program Files\Common Files\Microsoft Shared\Web Server E
xtensions\14\bin\psconfig" -cmd upgrade -inplace b2b -wait
SharePoint Products Configuration Wizard version 14.0.6009.1000. Copyright (C) M
icrosoft Corporation 2010. All rights reserved.

The upgrade command is invalid or a failure has been encountered.
The server farm will not work with missing installs. Add "-cmd installcheck -noi
nstallcheck" to the command-line to ignore this warning.

The following is missing on SETOPSPAPP01Q:
Hotfix for Microsoft SharePoint Foundation 2010 (KB2536601)
Hotfix for Microsoft SharePoint Foundation 2010 (KB2536601)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)
Hotfix for Microsoft Office Server (KB2536599)

Now, the error clearly indicates that CU update didn’t run quite well. So, now we looked at installed updates on the server and sure enough, we see a tons of hotfixes pertaining to KB2536599 installed. It almost as if the server has all the required patches but doesn’t recognize them. So, here is the little powershell command that can help.

Open your favorite powershell editor and execute the following command.

Get-SPProduct –local

And Yes now the weird error gone and we successfully ran the psconfig commands.