DCOM got error "Logon failure: unknown user name or bad password” Event 1004

09 May,2013 by Jack Vamvas

DCOM got error "Logon failure: unknown user name or bad password” – why does it appear? How can I fix it?

If the persistent error message appears  in the Event Viewer Logs , follow the instructions below to fix.

 

DCOM got error "Logon failure: unknown user name or bad password." and was unable to logon MYDOMAIN\auser1 in order to run the server: {00020812-0000-0000-C000-000000000046}

 

To find the application name :

Start  >  Run > Find > Regedit > Enter the ID number   “00020812-0000-0000-C000-000000000046”

 In the example ID – it mapped to Microsoft Excel Applications

 To fix the problem:

1) On Windows Server : Go to Start > Programs > Administrative Tools > Component Services

2).Expand the Component Services > Computers > My Computer > COM+ Applications.

3) Select the application  (eg: Microsoft Excel Applications), right click on it and choose "Properties".

4) Click on the “Identity” Tab. On the Identity tab there is a "This user:" radio button which contains the username and password that my Component is using. Change the user login information there and restart the server.

 Dcom_logon_error

 

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Author: Jack Vamvas (http://www.sqlserver-dba.com)


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