Delete ARP cache... ERROR..

When I'd like to delete ARP cache by:
arp -d *
I recived: the arp entry deletion failed: 87
any ideas ?

"Bildos" <> wrote ...
> When I'd like to delete ARP cache by: arp -d *
> I recived: the arp entry deletion failed: 87
> any ideas ?

That wasn't a very helpful error message from arp! :-) in WinError.h, error
87 is ERROR_INVALID_PARAMETER - which is pretty misleading (or wrong) for
this situation.

I believe you're actually getting the error because you don't have the
administrative privileges required to purge the cache. Right-click the
Command Prompt icon in Start Menu, and choose "Run as Administrator". Give
your consent to the UAC prompt. Now you have an Administrator command
Prompt - in the title bar, it will actually say "Administrator: Command
Prompt" (as opposed to just plain "Command Prompt").

Now run "arp -d" again. This time it should work.

I usually leave an Administrative prompt running in the background, so I can
quickly run utilities with elevation.

Hope it helps,
--
Andrew McLaren
amclar (at) optusnet dot com dot au

This isn't an admin rights issue. I tried runas admin and even tried as
the actual administrator user, and still get the error 87. Any new ideas
on how to clear the Arp cache in Vista?

Thanks,
James

Andrew McLaren;428241 Wrote:
> "Bildos" <> wrote ...
> > When I'd like to delete ARP cache by: arp -d *
> > I recived: the arp entry deletion failed: 87
> > any ideas ?
>
> That wasn't a very helpful error message from arp! :-) in WinError.h,
> error
> 87 is ERROR_INVALID_PARAMETER - which is pretty misleading (or wrong)
> for
> this situation.
>
> I believe you're actually getting the error because you don't have the
> administrative privileges required to purge the cache. Right-click the
> Command Prompt icon in Start Menu, and choose "Run as Administrator".
> Give
> your consent to the UAC prompt. Now you have an Administrator command
> Prompt - in the title bar, it will actually say "Administrator:
> Command
> Prompt" (as opposed to just plain "Command Prompt").
>
> Now run "arp -d" again. This time it should work.
>
> I usually leave an Administrative prompt running in the background, so
> I can
> quickly run utilities with elevation.
>
> Hope it helps,
> --
> Andrew McLaren
> amclar (at) optusnet dot com dot au


--
jrchilds
Posted via http://www.vistaheads.com

jrchilds

Reboot and go immediately to Administer mode and repeat what Andrew posted
substituting arp-d as C:\> arp -d*
Notice the spacing between > and a and also between p and -

Alternatively, use the command prompt below while in Administrator mode and enter
the following and hit OK and reboot immediately when done

C:\>netsh interface ip delete arpcache





--
Peter

Please Reply to Newsgroup for the benefit of others
Requests for assistance by email can not and will not be acknowledged.

"jrchilds" <> wrote in message
news:...
>
> This isn't an admin rights issue. I tried runas admin and even tried as
> the actual administrator user, and still get the error 87. Any new ideas
> on how to clear the Arp cache in Vista?
>
> Thanks,
> James
>
> Andrew McLaren;428241 Wrote:
>> "Bildos" <> wrote ...
>> > When I'd like to delete ARP cache by: arp -d *
>> > I recived: the arp entry deletion failed: 87
>> > any ideas ?
>>
>> That wasn't a very helpful error message from arp! :-) in WinError.h,
>> error
>> 87 is ERROR_INVALID_PARAMETER - which is pretty misleading (or wrong)
>> for
>> this situation.
>>
>> I believe you're actually getting the error because you don't have the
>> administrative privileges required to purge the cache. Right-click the
>> Command Prompt icon in Start Menu, and choose "Run as Administrator".
>> Give
>> your consent to the UAC prompt. Now you have an Administrator command
>> Prompt - in the title bar, it will actually say "Administrator:
>> Command
>> Prompt" (as opposed to just plain "Command Prompt").
>>
>> Now run "arp -d" again. This time it should work.
>>
>> I usually leave an Administrative prompt running in the background, so
>> I can
>> quickly run utilities with elevation.
>>
>> Hope it helps,
>> --
>> Andrew McLaren
>> amclar (at) optusnet dot com dot au
>
>
> --
> jrchilds
> Posted via http://www.vistaheads.com
>

Alteatively, use the command prompt below while in Administrator mode
and enter
the following and hit OK and reboot immediately when done

C:\>netsh interface ip delete arpcache


This worked great, thanks!


--
jrchilds
Posted via http://www.vistaheads.com

You are welcome and thanks for posting back and letting us know

--
Peter

Please Reply to Newsgroup for the benefit of others
Requests for assistance by email can not and will not be acknowledged.

"jrchilds" <> wrote in message
news:...
>
> Alteatively, use the command prompt below while in Administrator mode
> and enter
> the following and hit OK and reboot immediately when done
>
> C:\>netsh interface ip delete arpcache
>
>
> This worked great, thanks!
>
>
> --
> jrchilds
> Posted via http://www.vistaheads.com
>