SCVMM Error 19999 and issue 1602 VMM Console

From time to time the administration console VMM Console fell, and needs to reconnect to the server. Appears on the screen the following error Error 1602.

In the event viewer of the VMM server, appears the error logs and 19,999 in an event viewer.

The VMM server is running on a Windows 2008 R2, System Center VMM 2010 R2 SP1

I tried this but not success.

I tried this:
update dbo.tbl_VMM_GlobalSetting set PropertyValue=NULL where propertyName='LastSQMEngineRefreshTime'
update dbo.tbl_VMM_GlobalSetting set PropertyValue=NULL where propertyName='UpgradeTime'

Not sucess, plz help
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Was it connected before and is the Agent installed on the server you are trying to connect to ?

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Windows Server 2008

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