On the remote computer (the one that cannot be accessed), type in a cmd window the following:
c:> netsh firewall set service REMOTEADMIN enable
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Microsoft, Win, EVENT ID 10009 DCOM was unable to communicate with the computer
Have been getting these DCOM 10009 event id errors on a ISA2004/Websense server for more than 1.5 years. The system is running OK, but we want to fix this issue. We read all the fixes related to this error and none seem to work. Does anyone have a similar problem or is this a job for Microsoft?
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Maybe this can help:
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by: DCenaculoPosted on 2008-03-04 at 10:29:31ID: 21043552
DCOM is not configured to allow remote access
It might be failing due to DCOM being configured in a manner that doesn't allow remote applications to run. You must have DCOM configued (on the remote computer that is being accessed) to allow remote launch and remote activation. Type this in a command window on your USER-XP:
c:> dcomcnfg.exe
Then:
Click Component Services
Click Computers
Right-click My Computer
Properties
Click on the Default Properties tab
Check "Enable Distributed COM on this computer"
Default Authentication Level: Connect
Default Impersonation Level: Identify
Next:
Click on COM Security tab
Click Edit Limits under "Launch and Acitvate Permissions"
Make sure Remote Launch and Activation permissions are enabled for the Username you are using
Verify that the username (and group) you are using to access the remote machine have both local and remote (activation and launch) capabilities enabled (all 4 boxes should be checked). If DCOM is what is causing the problem, you will typically get an "Authentication Error" from the WMIC command above. If you are getting an "RPC Server Unavailable" error, it is likely that a firewall is blocking access completely (see below).