Powershell errors; error code 995 + HTTP_STATUS_DENIED

i've posted on powershell section haven't received solution ask here well.

server 2008 std x64. tried on 2008 r2 std x64 same result.

from thread: http://social.technet.microsoft.com/forums/en-us/winserverpowershell/thread/2231118c-84c5-4f83-b5c2-2f835799ca59

clients running xp sp3 v2? (see other thread), server 2008, running ps v2.

we keep getting following 3 errors in server log:

wsman operation signalshell failed, error code 995

wsman operation receiveshelloutput failed, error code 995

received response network layer; status: 401 (http_status_denied)

i can generate 995 error entering pssessions e.g:

---pssession.ps1---

$store = "store-8899-1"
invoke-command -computername $store -scriptblock {get-culture}

---pssession.ps1---

the command doesn't error , returns culture of pc.

the 401 error not sure on causing seems related our scripts uses pssessions, winrm remoting or whatever it's called.

i ran pssession against win 7 pc , still alerted 995 error.?

ps c:\users\sysadmin> invoke-command -computername preceda1 -scriptblock {$psver
siontable}

name                           value
----                           -----
serializationversion           1.1.0.1
clrversion                     2.0.50727.5456
psversion                      2.0
buildversion                   6.1.7601.17514
pscompatibleversions           {1.0, 2.0}
wsmanstackversion              2.0
psremotingprotocolversion      2.1

--

log name:      microsoft-windows-winrm/operational
source:        microsoft-windows-winrm
date:          28/03/2013 11:41:22 am
event id:      142
task category: response handling
level:         error
keywords:      client
user:          domainname\sysadmin
computer:      vsdom01.domainname.com
description:
wsman operation receiveshelloutput failed, error code 995
event xml:
<event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <system>
    <provider name="microsoft-windows-winrm" guid="{a7975c8f-ac13-49f1-87da-5a984a4ab417}" />
    <eventid>142</eventid>
    <version>0</version>
    <level>2</level>
    <task>10</task>
    <opcode>2</opcode>
    <keywords>0x4000000000000002</keywords>
    <timecreated systemtime="2013-03-28t01:11:22.567z" />
    <eventrecordid>1056427</eventrecordid>
    <correlation activityid="{00000001-0000-0000-cc60-ce80a219ce01}" />
    <execution processid="11588" threadid="1136" />
    <channel>microsoft-windows-winrm/operational</channel>
    <computer>vsdom01.domainname.com</computer>
    <security userid="s-1-5-21-3781176320-1899982851-248831875-2960" />
  </system>
  <eventdata>
    <data name="operationname">receiveshelloutput</data>
    <data name="errorcode">995</data>
  </eventdata>
</event>

log name:      microsoft-windows-winrm/operational
source:        microsoft-windows-winrm
date:          28/03/2013 11:41:22 am
event id:      142
task category: response handling
level:         error
keywords:      client
user:          domainname\sysadmin
computer:      vsdom01.domainname.com
description:
wsman operation signalshell failed, error code 995
event xml:
<event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <system>
    <provider name="microsoft-windows-winrm" guid="{a7975c8f-ac13-49f1-87da-5a984a4ab417}" />
    <eventid>142</eventid>
    <version>0</version>
    <level>2</level>
    <task>10</task>
    <opcode>2</opcode>
    <keywords>0x4000000000000002</keywords>
    <timecreated systemtime="2013-03-28t01:11:22.567z" />
    <eventrecordid>1056433</eventrecordid>
    <correlation activityid="{00000001-0000-0000-cc60-ce80a219ce01}" />
    <execution processid="11588" threadid="1136" />
    <channel>microsoft-windows-winrm/operational</channel>
    <computer>vsdom01.domainname.com</computer>
    <security userid="s-1-5-21-3781176320-1899982851-248831875-2960" />
  </system>
  <eventdata>
    <data name="operationname">signalshell</data>
    <data name="errorcode">995</data>
  </eventdata>
</event>

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