Job failed with the following error. This job will be skipped. Failed to connect to an IPC Port: Access is denied.

While Running stsadm with 'execadmsvcjobs' if you come across following error, it's likely one of the following thing could fix it.

stsadm.exe -o execadmsvcjobs

Executing .
Executing SharePoint Worker Process Group Updatefaab8d3e-048c-42b1-80d8-63ab5451da0d.
The SharePoint Worker Process Group Updatefaab8d3e-048c-42b1-80d8-63ab5451da0d job failed with the following error. This job will be skipped. Failed to connect to an IPC Port: Access is denied.

Operation completed successfully.


This can be result of multiple things. Some of the thing is specified in http://fnoja.blogspot.com/2007/08/failed-to-connect-to-ipc-port-access-is.html blog.
In short you need to check following:

1. open services management console(services.msc) and check if 'Windows SharePoint Services Administration' service is running. If not start it. Make sure service log-on credential are correct.
2. Check if the 'Windows SharePoint Services Timer' service is running and with write credential. This user will need access to the database server as well.
3. And if your Sharepoint server accessing the database using local service, then the machine is added to the database as sysadmin.