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My original problem was the NirCmd remote \\PC_D ... (http://www.nirsoft.net/utils/nircmd.html) was failing. I tracked that down to it using at \\computername command which is not working on all machines. The local use of at time ... works fine on all machines. I have three PCs (let's call them PC_L,PC_D,PC_H) and two of them are getting this error from testing in cmd.exe:

> at \\computername
> Access is denied

That shows \\PC_L is setup correctly but the other two are lacking something. Something with \\PC_H and \\PC_D is not setup properly (running XP SP3 home and XP PRO edition respectively). Testing shutdown in cmd.exe:

> shutdown -s -m \\pc_h -t 9999
> The network path was not found.

This error seems puzzling. So to summarize:

FROM    FROM  TO    AT      REMOTE SHUT
TYPE    HOST  HOST  CMD     CMD
======  ====  ====  ======= ===========
XPPRO   PC_L  PC_D  FAILS   OK  
XPPRO   PC_L  PC_H  FAILS   FAILS
XPPRO   PC_D  PC_L  OK      OK
XPPRO   PC_D  PC_H  FAILS   FAILS
XPHOME  PC_H  PC_L  OK      OK   
XPHOME  PC_H  PC_D  FAILS   OK  

I have checked the following:

  • All machines are logged in with a the same user name with same password, and members of the Adminstrators group.
  • Access file shares works fine.
  • net view \\computername works.
  • All machines are in same Workgroup name.

What other settings should I check? (The two XPPRO machines should not have "FAIL" in above table, so that would be a good place to start. Once that's fix then look further at the "XPHOME" PC)

  • Thought about this and didn't come to a quick idea. So, while file share acces works, what's with nslookup, what are the routing tables saying? IP configuration? – Clijsters Apr 22 '16 at 16:07
  • @Clijsters nothing unusual these PC are on same subnet, have same routing info. nslookup with what arguments ? – Scott R Apr 25 '16 at 14:42
  • See nslookup. nslookup pcname should help discovering DNS issues. – Clijsters Apr 25 '16 at 15:13

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