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<div dir="ltr"><font face="tahoma">Greetings,</font></div>
<div dir="ltr"><font face="tahoma"></font> </div>
<div dir="ltr"><font face="tahoma"></font> </div>
<div dir="ltr"><font face="tahoma">We're running Windows Server 2008R2<a></a>/IIS<a></a> 7.5 and Shibboleth v2.4.3<a></a> and, in a nutshell, we are seeing Shibboleth involved in quite a few second chance access violations (and subsequent web service crash)
of late. </font></div>
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<div dir="ltr"><font face="tahoma">I invoked some diagnostic help from Microsoft PSS in September and their synopsis of the problem is included below. I have since upgraded to the current version of Shibboleth, v2.4.3<a></a><a></a>, but the *same* problems
continue.</font></div>
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<div dir="ltr"><font face="tahoma">Is anyone on the list aware of any similar problems or offer any insight on what we should do to resolve the problem?
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<div dir="ltr"><font face="tahoma"></font> </div>
<div dir="ltr"><font face="tahoma"></font></div>
<div dir="ltr"><font face="tahoma">Joe </font></div>
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<div dir="ltr"><font face="tahoma"></font> </div>
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<div dir="ltr"><font face="tahoma">//Microsoft PSS response</font></div>
<div dir="ltr"><font face="tahoma"></font> </div>
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<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri">I have finished analyzing the dumps you sent Friday and the crash is being caused by the Shibboleth ISAPI<a></a> filter. In the crashing call stack below you can see that isapi_shib<a></a>
is calling into our ServerSupportFunction<a></a>. When I look at the instruction that is causing the AV in our code, I can see that the Shibboleth component is passing in a bad pointer for the ul1<a></a> parameter, see
</font><a href="http://msdn.microsoft.com/en-us/library/aa503395.aspx" target="_blank"><font color="#0000ff" size="3" face="Calibri">http://msdn.microsoft.com/en-us/library/aa503395.aspx</font></a><font size="3"><font face="Calibri">.
</font></font></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="calibri"></font> </p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri"></font></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri"></font></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">0:030> kL<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">Child-SP RetAddr<a></a> Call Site</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23b970</span> 00000001`8000174e<a></a> filter!W3_FILTER_CONTEXT<a></a>::ServerSupportFunction+0x174<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23bb80</span> 00000001`8000c566<a></a>
<span style="BACKGROUND: yellow">isapi_shib</span>!TerminateFilter+0x45e<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23bbc0</span> 00000000`745e6f60<a></a> isapi_shib!GetFilterVersion+0x2896<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23bc00</span> 00000000`745b3b3c<a></a> msvcr90!_CallSettingFrame+0x20<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23bc30</span> 00000000`77990c21<a></a> msvcr90!__CxxCallCatchBlock+0xfc<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23bd00</span> 00000001`80007ff2<a></a> ntdll!RcFrameConsolidation+0x3<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23ea20</span> 000007fe`f67e17e4<a></a> isapi_shib!HttpFilterProc+0x2d2<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23eec0</span> 000007fe`f67e1e01<a></a> filter!W3_FILTER_CONTEXT<a></a>::NotifyFilters+0x178<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23f0e0</span> 000007fe`f8f6a185<a></a> filter!GlobalDoWork+0x351<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23f310</span> 000007fe`f8f6ab24<a></a> iiscore!W3_CONTEXT<a></a>::SetupStateMachine+0x685<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23f820</span> 000007fe`fb4310d2<a></a> iiscore!W3_MAIN_CONTEXT<a></a>::OnNewRequest+0x1b0<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23f850</span> 000007fe`fb43109c<a></a> w3dt!UL_NATIVE_REQUEST<a></a>::DoWork+0x126<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23f8b0</span> 000007fe`f8b01fba<a></a> w3dt!OverlappedCompletionRoutine+0x1c<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23f8e0</span> 000007fe`f8b02024<a></a> w3tp!THREAD_POOL_DATA<a></a>::ThreadPoolThread+0x7a<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23f930</span> 000007fe`f8b020a1<a></a> w3tp!THREAD_POOL_DATA<a></a>::ThreadPoolThread+0x34<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23f960</span> 00000000`7783652d<a></a> w3tp!THREAD_MANAGER<a></a>::ThreadManagerThread+0x61<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23f990</span> 00000000`7796c521<a></a> kernel32!BaseThreadInitThunk+0xd<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000000`0b23f9c0</span> 00000000`00000000 ntdll!RtlUserThreadStart+0x1d<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><font face="courier new"></font></span> </p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri"></font></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3"><font face="Calibri">As you can see from below the AV is caused by an attempted read from 8000e6f0<a></a>.
</font></font></p>
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<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">0:030> .exr<a></a> -1</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">ExceptionAddress</span>: 000007fef67ebc14<a></a> (filter!W3_FILTER_CONTEXT<a></a>::ServerSupportFunction+0x0000000000000174<a></a>)</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">ExceptionCode</span>: c0000005<a></a> (Access violation)</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">ExceptionFlags</span>: 00000000</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">NumberParameters</span>: 2</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">Parameter[0]: 0000000000000000</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">Parameter[1]: 000000008000e6f0<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">Attempt to read from address
<span style="BACKGROUND: aqua"><span style="BACKGROUND: aqua">000000008000e6f0</span><a></a></span></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><span style="BACKGROUND: aqua"><font face="courier new"></font></span></span> </p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri"></font></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3"><font face="Calibri">The memory at the referenced address is free and is Page_Protect<a></a></font></font></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri"></font></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">0:030> !address
<span style="BACKGROUND: aqua"><span style="BACKGROUND: aqua">000000008000e6f0</span><a></a></span></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">Usage: Free</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">Base Address: 00000000`7fff0000<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">End Address: 00000000`ffb00000<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">Region Size: 00000000`7fb10000<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">Type: 00000000
</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">State: 00010000 MEM_FREE<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">Protect: 00000001 PAGE_NOACCESS<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><font face="courier new"></font></span> </p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri"></font></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">0:030> lmvm<a></a> isapi_shib<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">start end module name</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">00000001`80000000 00000001`8001b000<a></a> isapi_shib<a></a> (export symbols) isapi_shib.dll<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">Loaded symbol image file: isapi_shib.dll<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">Image path: D:\opt\shibboleth-sp\lib\shibboleth\isapi_shib.dll<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">Image name: isapi_shib.dll<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">Timestamp: Tue Dec 01 12:23:50 2009 (4B155126<a></a>)</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">CheckSum</span>: 00023BC8<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">ImageSize</span>: 0001B000<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">File version: 2.3.1.0</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><span style="BACKGROUND: aqua">Product version: 2.3.1.0</span></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">File flags: 0 (Mask 3F<a></a>)</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">File OS: 40004 NT Win32</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">File type: 2.0 Dll<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">File date: 00000000.00000000</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">Translations: 0409.04b0<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">CompanyName</span>: Internet2<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">ProductName</span>: Shibboleth 2.3.1</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">InternalName</span>: isapi_shib<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">OriginalFilename</span>: isapi_shib.dll<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">ProductVersion</span>: 2, 3, 1, 0</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">FileVersion</span>: 2, 3, 1, 0</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">PrivateBuild</span>: 2, 3, 1, 0</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">SpecialBuild</span>: 2, 3, 1, 0</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">FileDescription</span>: Shibboleth ISAPI<a></a> Filter / Extension</span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">LegalCopyright</span>: Copyright © 2009 Internet2<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><a></a><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">LegalTrademarks</span>: Copyright © 2009 Internet2<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">Comments: Copyright © 2009 Internet2<a></a></span></p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><font face="courier new"></font></span> </p>
<p style="MARGIN: 0in 0in 0pt" class="MsoNormal"><font size="3" face="Calibri"></font></p>
<span style="FONT-FAMILY: 'Calibri','sans-serif'; FONT-SIZE: 11pt">It looks like you are a few versions back on the Shibboleth component so my recommendation would be to upgrade to the latest stable build and to see if they may have already fixed the issue.
If the newest version doesn’t resolve the issue then you will need to file a bug with the group who maintains the Shibboleth product.
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