You do not have access rights to Logical Disk Manager

I am getting the message "You do not have access rights to Logical Disk
Manager" when trying to access the "Disk Management" extension in MMC. I am
running XP Professional SP1 on a standalone PC. I am logged on as an
administrator and the Logical Disk Manager service is running. Looking with
'Event Viewer' under 'System' I see messages that the Logical Disk Manager
Administrator Service was : (1) successfully sent a start control, (2)
entered the running state, and (3) entered the stopped state. These appear
in quick succession. I can't see any other diagnostic information relating
to my failed attempt to access "Disk Management". I have searched through
"User Rights Assignment" under the "Local Policies" branch of "Security
Settings" but cannot see anything that seems likely to be causing the
problem.

Please help me, I'm desperate !

I thought I would add some more specific instructions for XP users on
Q264910. The Microsoft Article is limited to 2000 and the instructions
don't jive with XP.

1. On the toolbar, click START, click RUN, and then type: "dcomcnfg".
(no quotes)
2. Click "Component Services"
3. Double click "Computers" in the Right hand task pane
4. Right-click on "My Computer", select "Properties"
5. Select "Default Properties" tab
6. Change the "Default Authentication Level" to "Connect"
Note: On at least one system I experienced this on, the setting was
already set to "Connect", and I changed it back to "default" and it
allowed me to enter the Disk Manager. I didn't see any repercussions
from this.

Tony Berry wrote:
Sorry, the fix is to change the authentication level
from 'Default' to 'Connect', not the other way round.

See also :
http://www.win2000mag.net/Articles/Index.cfm?
ArticleID=24812

I cannot find any reference to this problem in the
context of XP.

-----Original Message-----
OK, I found the answer myself before anybody could help
me. See Microsoft Knowledge Base article Q264910 "Access
to Disk Manager is Denied". The suggested fix (of
changing the DCOM default authentication level
from 'Connect' to 'Default') works for XP Pro as well as
for 2000.

-----Original Message-----
I am getting the message "You do not have access rights
to Logical Disk
Manager" when trying to access the "Disk Management"
extension in MMC. I am
running XP Professional SP1 on a standalone PC. I am
logged on as an
administrator and the Logical Disk Manager service is
running. Looking with
'Event Viewer' under 'System' I see messages that the
Logical Disk Manager
Administrator Service was : (1) successfully sent a
start control, (2)
entered the running state, and (3) entered the stopped
state. These appear
in quick succession. I can't see any other diagnostic
information relating
to my failed attempt to access "Disk Management". I
have
searched through
"User Rights Assignment" under the "Local Policies"
branch of "Security
Settings" but cannot see anything that seems likely to
be causing the
problem.

Please help me, I'm desperate !