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<updated>2016-06-30T06:26:40+01:00</updated>

<author><name><![CDATA[Yubico Forum]]></name></author>
<id>https://forum.yubico.com/feed.php?f=23&amp;t=2355</id>
<entry>
<author><name><![CDATA[Aditza]]></name></author>
<updated>2016-06-30T06:26:40+01:00</updated>
<published>2016-06-30T06:26:40+01:00</published>
<id>https://forum.yubico.com/viewtopic.php?t=2355&amp;p=8753#p8753</id>
<link href="https://forum.yubico.com/viewtopic.php?t=2355&amp;p=8753#p8753"/>
<title type="html"><![CDATA[Re: Windows 10 logon - BSOD/forced restart on login failure?]]></title>

<content type="html" xml:base="https://forum.yubico.com/viewtopic.php?t=2355&amp;p=8753#p8753"><![CDATA[
found more info about yesterday's crashes:<br /><br />in the application log:<br /><div class="codetitle"><b>Code:</b></div><div class="codecontent">- &lt;Event xmlns=&quot;http://schemas.microsoft.com/win/2004/08/events/event&quot;&gt;<br />- &lt;System&gt;<br />  &lt;Provider Name=&quot;Application Error&quot; /&gt; <br />  &lt;EventID Qualifiers=&quot;0&quot;&gt;1000&lt;/EventID&gt; <br />  &lt;Level&gt;2&lt;/Level&gt; <br />  &lt;Task&gt;100&lt;/Task&gt; <br />  &lt;Keywords&gt;0x80000000000000&lt;/Keywords&gt; <br />  &lt;TimeCreated SystemTime=&quot;2016-06-29T11:52:02.869406900Z&quot; /&gt; <br />  &lt;EventRecordID&gt;2190&lt;/EventRecordID&gt; <br />  &lt;Channel&gt;Application&lt;/Channel&gt; <br />  &lt;Computer&gt;-----------deleted-------------&lt;/Computer&gt; <br />  &lt;Security /&gt; <br />  &lt;/System&gt;<br />- &lt;EventData&gt;<br />  &lt;Data&gt;lsass.exe&lt;/Data&gt; <br />  &lt;Data&gt;10.0.10586.0&lt;/Data&gt; <br />  &lt;Data&gt;5632d7c6&lt;/Data&gt; <br />  &lt;Data&gt;YubiClientAPI.dll&lt;/Data&gt; <br />  &lt;Data&gt;4.1.0.0&lt;/Data&gt; <br />  &lt;Data&gt;56fa33a0&lt;/Data&gt; <br />  &lt;Data&gt;c0000005&lt;/Data&gt; <br />  &lt;Data&gt;0000000000009850&lt;/Data&gt; <br />  &lt;Data&gt;318&lt;/Data&gt; <br />  &lt;Data&gt;01d1d1ee2395dab3&lt;/Data&gt; <br />  &lt;Data&gt;C:\Windows\system32\lsass.exe&lt;/Data&gt; <br />  &lt;Data&gt;C:\Program Files\Yubico\Yubikey Client API\Bin\x64\YubiClientAPI.dll&lt;/Data&gt; <br />  &lt;Data&gt;4aca7058-d3d7-4762-a0ab-af59d29df0fa&lt;/Data&gt; <br />  &lt;Data /&gt; <br />  &lt;Data /&gt; <br />  &lt;/EventData&gt;<br />  &lt;/Event&gt;<br /></div><br /><br />and another one, a bit later:<br /><div class="codetitle"><b>Code:</b></div><div class="codecontent">- &lt;Event xmlns=&quot;http://schemas.microsoft.com/win/2004/08/events/event&quot;&gt;<br />- &lt;System&gt;<br />  &lt;Provider Name=&quot;Application Error&quot; /&gt; <br />  &lt;EventID Qualifiers=&quot;0&quot;&gt;1000&lt;/EventID&gt; <br />  &lt;Level&gt;2&lt;/Level&gt; <br />  &lt;Task&gt;100&lt;/Task&gt; <br />  &lt;Keywords&gt;0x80000000000000&lt;/Keywords&gt; <br />  &lt;TimeCreated SystemTime=&quot;2016-06-29T11:54:07.782194900Z&quot; /&gt; <br />  &lt;EventRecordID&gt;2201&lt;/EventRecordID&gt; <br />  &lt;Channel&gt;Application&lt;/Channel&gt; <br />  &lt;Computer&gt;----deleted----&lt;/Computer&gt; <br />  &lt;Security /&gt; <br />  &lt;/System&gt;<br />- &lt;EventData&gt;<br />  &lt;Data&gt;lsass.exe&lt;/Data&gt; <br />  &lt;Data&gt;10.0.10586.0&lt;/Data&gt; <br />  &lt;Data&gt;5632d7c6&lt;/Data&gt; <br />  &lt;Data&gt;YubiClientAPI.dll&lt;/Data&gt; <br />  &lt;Data&gt;4.1.0.0&lt;/Data&gt; <br />  &lt;Data&gt;56fa33a0&lt;/Data&gt; <br />  &lt;Data&gt;c0000005&lt;/Data&gt; <br />  &lt;Data&gt;0000000000009850&lt;/Data&gt; <br />  &lt;Data&gt;318&lt;/Data&gt; <br />  &lt;Data&gt;01d1d1fce77f4e8d&lt;/Data&gt; <br />  &lt;Data&gt;C:\Windows\system32\lsass.exe&lt;/Data&gt; <br />  &lt;Data&gt;C:\Program Files\Yubico\Yubikey Client API\Bin\x64\YubiClientAPI.dll&lt;/Data&gt; <br />  &lt;Data&gt;6c252247-2704-4f5f-868d-e53b81eb0567&lt;/Data&gt; <br />  &lt;Data /&gt; <br />  &lt;Data /&gt; <br />  &lt;/EventData&gt;<br />  &lt;/Event&gt;<br /></div><br /><br /><br /><br />and in windows error reports:<br /><div class="codetitle"><b>Code:</b></div><div class="codecontent">Source<br />Local Security Authority Process<br /><br />Summary<br />Stopped working<br /><br />Date<br />‎29.‎06.‎2016 14:52<br /><br />Status<br />Report sent<br /><br />Description<br />Faulting Application Path:   C:\Windows\System32\lsass.exe<br /><br />Problem signature<br />Problem Event Name:   CriticalProcessFault2<br />Application Name:   lsass.exe<br />Application Version:   10.0.10586.0<br />Application Timestamp:   5632d7c6<br />Fault Module Name:   YubiClientAPI.dll<br />Fault Module Version:   4.1.0.0<br />Fault Module Timestamp:   56fa33a0<br />Exception Code:   c0000005<br />Exception Offset:   0000000000009850<br />Exception Data:   00000000<br />Exception Flags:   0x00000000<br />OS Version:   10.0.10586.2.0.0.256.48<br />Locale ID:   1048<br />Additional Information 1:   239b<br />Additional Information 2:   239b305196fda349743e699f81a44e44<br />Additional Information 3:   b014<br />Additional Information 4:   b0144722e63672165ee5b3aec4b84c5e<br /><br />Extra information about the problem<br />Bucket ID:   2fe3be4afcc42abc6dd4526a1211d3d9 (126388077789)<br /></div><br /><br /><br /><div class="codetitle"><b>Code:</b></div><div class="codecontent">Source<br />Local Security Authority Process<br /><br />Summary<br />Stopped working<br /><br />Date<br />‎29.‎06.‎2016 14:54<br /><br />Status<br />Report sent<br /><br />Description<br />Faulting Application Path:   C:\Windows\System32\lsass.exe<br /><br />Problem signature<br />Problem Event Name:   CriticalProcessFault2<br />Application Name:   lsass.exe<br />Application Version:   10.0.10586.0<br />Application Timestamp:   5632d7c6<br />Fault Module Name:   YubiClientAPI.dll<br />Fault Module Version:   4.1.0.0<br />Fault Module Timestamp:   56fa33a0<br />Exception Code:   c0000005<br />Exception Offset:   0000000000009850<br />Exception Data:   00000000<br />Exception Flags:   0x00000000<br />OS Version:   10.0.10586.2.0.0.256.48<br />Locale ID:   1048<br />Additional Information 1:   239b<br />Additional Information 2:   239b305196fda349743e699f81a44e44<br />Additional Information 3:   b014<br />Additional Information 4:   b0144722e63672165ee5b3aec4b84c5e<br /><br />Extra information about the problem<br />Bucket ID:   2fe3be4afcc42abc6dd4526a1211d3d9 (126388077789)<br /></div><p>Statistics: Posted by <a href="https://forum.yubico.com/memberlist.php?mode=viewprofile&amp;u=4130">Aditza</a> — Thu Jun 30, 2016 6:26 am</p><hr />
]]></content>
</entry>
<entry>
<author><name><![CDATA[Aditza]]></name></author>
<updated>2016-06-29T14:24:55+01:00</updated>
<published>2016-06-29T14:24:55+01:00</published>
<id>https://forum.yubico.com/viewtopic.php?t=2355&amp;p=8752#p8752</id>
<link href="https://forum.yubico.com/viewtopic.php?t=2355&amp;p=8752#p8752"/>
<title type="html"><![CDATA[Re: Windows 10 logon - BSOD/forced restart on login failure?]]></title>

<content type="html" xml:base="https://forum.yubico.com/viewtopic.php?t=2355&amp;p=8752#p8752"><![CDATA[
note: i'm using a Yubikey 4 with firmware 4.2.7 and HMAC-SHA1 challenge-response is configured to not require touch... but even so.. i'm testing for what happens when the key is NOT connected and the user keeps insisting/trying to login... the firmware should not matter at all in this case since the key is not present.<br /><br />note 2 - not sure if it matters: the system boots in EFI mode, secure boot mode is enabled, Windows 8+10 WHQL mode is enabled in the bios secure boot configuration.<br /><br />note 3: some of my tests were with challenge-response set to require touch while connected, but avoiding to touch it on purpose... Win10 crashed anyway even so...  i think the screenshot of the event log above might have been one of these &quot;key present but not touched&quot; crashes, as it follows some events related to WudfUsbccidDrv... i'll look into it tomorrow. Anyway, the same type of crash occurred when the key was not connected at all so i don't think it makes a difference.<p>Statistics: Posted by <a href="https://forum.yubico.com/memberlist.php?mode=viewprofile&amp;u=4130">Aditza</a> — Wed Jun 29, 2016 2:24 pm</p><hr />
]]></content>
</entry>
<entry>
<author><name><![CDATA[Aditza]]></name></author>
<updated>2016-06-29T14:12:02+01:00</updated>
<published>2016-06-29T14:12:02+01:00</published>
<id>https://forum.yubico.com/viewtopic.php?t=2355&amp;p=8751#p8751</id>
<link href="https://forum.yubico.com/viewtopic.php?t=2355&amp;p=8751#p8751"/>
<title type="html"><![CDATA[Re: Windows 10 logon - BSOD/forced restart on login failure?]]></title>

<content type="html" xml:base="https://forum.yubico.com/viewtopic.php?t=2355&amp;p=8751#p8751"><![CDATA[
P.S. (could only attach 3 files to the initial post.. these are the 4th and 5th)<br /><br />this is how it looks like when all user accounts on the login screen are showing up doubled:<br />test1a_stage1.jpg<br />test1b_stage1_no_key_inserted.jpg<p>Statistics: Posted by <a href="https://forum.yubico.com/memberlist.php?mode=viewprofile&amp;u=4130">Aditza</a> — Wed Jun 29, 2016 2:12 pm</p><hr />
]]></content>
</entry>
<entry>
<author><name><![CDATA[Aditza]]></name></author>
<updated>2016-06-29T14:34:29+01:00</updated>
<published>2016-06-29T14:05:55+01:00</published>
<id>https://forum.yubico.com/viewtopic.php?t=2355&amp;p=8750#p8750</id>
<link href="https://forum.yubico.com/viewtopic.php?t=2355&amp;p=8750#p8750"/>
<title type="html"><![CDATA[Windows 10 logon - BSOD/forced restart on login failure?]]></title>

<content type="html" xml:base="https://forum.yubico.com/viewtopic.php?t=2355&amp;p=8750#p8750"><![CDATA[
i tried to set up 2-factor logon on Windows 10 x64 Professional (version 1511 OS Build 10586.420 - latest available from MS Update) and it doesn't quite work:<br /><br />1. the Yubico installer thinks it's running on Windows 8 x64<br /><br />2. after enabling 2-factor logons all user accounts on the login screen are showing up doubled.<br /><br />3. when testing for multiple login failures in a row, the system behaves as if it gets a BSOD-type of restart... the screen shuts down suddenly and the system reboots... looking up things in the system event log shows that the LSASS.exe process is crashing right at the time (or because) of the failed yubikey logins.<br /><br />message in the event log:The system process 'C:\Windows\system32\lsass.exe' terminated unexpectedly with status code -1073741819. The system will now shut down and restart.<p>Statistics: Posted by <a href="https://forum.yubico.com/memberlist.php?mode=viewprofile&amp;u=4130">Aditza</a> — Wed Jun 29, 2016 2:05 pm</p><hr />
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