Unable to remotely
connect to Windows Management Instrumentation
If Common
Information Model (CIM) information for a remote client computer system
is not available to the management application or if a remote BIOS
update that uses Distributed Component Object Model (DCOM) fails,
the following error messages are displayed:
Access Denied
Win32:RPC server is unavailable
Verify that the client system is connected to the network.
Type the following in the command prompt of the server:
ping <Host Name or IP Address> and
press
<Enter>.
Perform the following step if both the server and the client
system are in the same domain:
Verify that the domain administrator account has Administrator
privileges for both systems.
Perform the following step if both the server and the client
system are in a workgroup (not in the same domain):
Make sure that the server is running on the latest Windows Server.
NOTE: Back up
your system data files before changing the registry. Editing the registry
incorrectly may render your operating system unusable.
Edit the registry change on the client system. Click
Start >
Run, then type
regedit, and then click
OK. In the
Registry Editor window,
browse to
My Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa.
Set the
forceguest value to
0 (default value is
1). Unless you modify this value, the user
remotely connecting to the system will have guest privileges, even
if the supplied credentials provide Administrator privileges.
Create an account on the client system with the same
user name and password, as an administrator account on the system
running the WMI management application.
If you are using IT Assistant, run the IT Assistant
ConfigServices utility (
configservices.exe in
the
/bin directory under the IT Assistant installation
directory). Configure IT Assistant to run under a local administrator
account, which is also now an administrator on the remote client.
Also, verify that DCOM and CIM are enabled.
If you are using IT Assistant, use the administrator
account to configure subnet discovery for the client system. Enter
the user name as <
client machine name>\<
account name>. If the system has already been discovered, remove the system from
the list of discovered systems, configure subnet discovery for it,
and then rediscover it.
NOTE: Dell recommends using Dell OpenManage
Essentials as replacement for IT Assistant. For more information on
Dell OpenManage Essentials see,
dell.com/dellclientcommandsuitemanuals.
Perform the following steps to modify user privilege levels
for connecting remotely to a system’s WMI:
Click
Start >
Run, type
compmgmt.msc, and then click
OK.
Browse to
WMI Control under
Services and Applications.
Right-click
WMI Control, and
then click
Properties.
Click the
Security tab and select
DCIM/SYSMAN under the
Root tree.
Click
Security.
Select the specific group or user that you want to control
access and use the
Allow or
Deny check box to configure the permissions.
Perform the following steps to connect to a WMI (
root\DCIM/SYSMAN) on a system from a remote system using
WMI CIM Studio:
Install
WMI tools along with
wbemtest on
the local system, and then install
Dell Command | Monitor on the remote
system.
Configure the firewall on the system for WMI remote
connectivity. For example, open the TCP ports 135 and 445 in Windows
firewall.
Set the
Local Security setting to
Classic - local users authenticate as themselves for Network access:
Sharing and security model for local accounts
in the
Local Security Policy.
Connect to the WMI (
root\DCIM/SYSMAN) on the local system from a remote system using WMI wbemtest. For
example, \\[Target remote system IP Address]\root\DCIM/SYSMAN
Enter the Administrator credentials of the target remote
system if prompted.
For more information on WMI, see the applicable Microsoft documentation
at
msdn.microsoft.com.
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