Event Id 1000 every 5 minutes

[Javier]

Event ID: 1000
Event Source: Userenv
Description:
Windows cannot determine the user or computer name. Return value (1753).

I can´t find a KB that have the "Return value 1753"

 

[Tommy]

Check out this excellent site:
http://www.eventid.net/display.asp?
eventid=1000&source=userenv

 

[David Everett [MSFT]]

You can use "net helpmsg" to determine what these values are.

Net helpmsg 1753 returns "There are no more endpoints available from the
endpoint mapper."

It looks like RPC ports are being blocked.