https://k5wiki.kerberos.org/wiki?title=KfW_UAC_interactions&feed=atom&action=history
KfW UAC interactions - Revision history
2024-03-28T22:52:46Z
Revision history for this page on the wiki
MediaWiki 1.27.4
https://k5wiki.kerberos.org/wiki?title=KfW_UAC_interactions&diff=5604&oldid=prev
TomYu: /* Troubleshooting */
2016-02-26T21:05:28Z
<p><span dir="auto"><span class="autocomment">Troubleshooting</span></span></p>
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<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 21:05, 26 February 2016</td>
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TomYu
https://k5wiki.kerberos.org/wiki?title=KfW_UAC_interactions&diff=5600&oldid=prev
TomYu at 19:42, 24 February 2016
2016-02-24T19:42:35Z
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<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 19:42, 24 February 2016</td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>and looking at whether the MSLSA: ccache is lacking krbtgt/ATHENA.MIT.EDU@ATHENA.MIT.EDU is useful.</div></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>and looking at whether the MSLSA: ccache is lacking krbtgt/ATHENA.MIT.EDU@ATHENA.MIT.EDU is useful<ins class="diffchange diffchange-inline">. On some machines, it's necessary to give the full path to the KfW klist because there's a Windows native klist program that behaves differently</ins>.</div></td>
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TomYu
https://k5wiki.kerberos.org/wiki?title=KfW_UAC_interactions&diff=5599&oldid=prev
TomYu at 19:41, 24 February 2016
2016-02-24T19:41:49Z
<p></p>
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<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 19:41, 24 February 2016</td>
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<td colspan="2" class="diff-lineno">Line 1:</td>
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<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>This page attempts to characterize what we know about KfW interactions with UAC.</div></td>
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<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>This page attempts to characterize what we know about KfW interactions with UAC.</div></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>"Matching credential not found" from gss_init_sec_context</div></td>
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<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Investigate how the LSA cache behaves in a machine not joined to the WIN domain. Such a machine might not know how to contact ATHENA realm KDCs or how to do cross-realm to WIN correctly (this is highly speculative).</div></td>
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<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Investigate how the LSA cache behaves in a machine not joined to the WIN domain. Such a machine might not know how to contact ATHENA realm KDCs or how to do cross-realm to WIN correctly (this is highly speculative).</div></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>==Popup kinit failure==</div></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* Popup from Leash displays, prompting for Kerberos password</div></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* Type password</div></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* Get "Couldn't inquire DEFAULT INITIATING credentials" from gss_inquire_cred</div></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This seems to happen when</div></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* the registry key HKCU\Software\MIT\Kerberos5\ccname isn't set (nor its HKLM version)</div></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* the API: ccache is empty (or expired?)</div></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* user is in the local admin group</div></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* UAC is active</div></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>==Troubleshooting==</div></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
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<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Check whether the user is in the local Administrators group:</div></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
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<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> net localgroup Administrators</div></td>
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<td colspan="2" class="diff-empty"> </td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
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<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Look for WIN\username or WIN\groupname (where username is the user's account name, and groupname is the name of a group the user belongs to).</div></td>
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<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
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<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Check the default ccache name:</div></td>
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<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
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<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> reg query HKCU\Software\MIT\Kerberos5 /v ccname</div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> reg query HKLM\Software\MIT\Kerberos5 /v ccname</div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Also running</div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> "C:\Program Files\MIT\Kerberos\bin\klist.exe" -A</div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>and looking at whether the MSLSA: ccache is lacking krbtgt/ATHENA.MIT.EDU@ATHENA.MIT.EDU is useful.</div></td>
</tr>
</table>
TomYu
https://k5wiki.kerberos.org/wiki?title=KfW_UAC_interactions&diff=5598&oldid=prev
TomYu at 23:13, 17 February 2016
2016-02-17T23:13:11Z
<p></p>
<table class="diff diff-contentalign-left" data-mw="interface">
<col class='diff-marker' />
<col class='diff-content' />
<col class='diff-marker' />
<col class='diff-content' />
<tr style='vertical-align: top;' lang='en'>
<td colspan='2' style="background-color: white; color:black; text-align: center;">← Older revision</td>
<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 23:13, 17 February 2016</td>
</tr><tr>
<td colspan="2" class="diff-lineno">Line 7:</td>
<td colspan="2" class="diff-lineno">Line 7:</td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* UAC is active</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* UAC is active</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* ms2mit.exe runs from the login scripts</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* ms2mit.exe runs from the login scripts</div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* user hasn't set a default ccache location for KfW in the registry</div></td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* user hasn't set a default ccache location for KfW in the registry<ins class="diffchange diffchange-inline"> HKCU\Software\MIT\Kerberos5\ccname? maybe also HKLM</ins></div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>The result is an API: ccache with no TGTs that contains only the service tickets that existed in the LSA ccache at the time ms2mit.exe ran. This leads to cryptic errors when running SAPgui, etc. and no prompting by Leash for a password to get fresh tickets. (If the API: ccache is empty, Leash should prompt.) We believe this is because the LSA doesn't allow direct access to TGTs when an admin user is logged in with UAC active.</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>The result is an API: ccache with no TGTs that contains only the service tickets that existed in the LSA ccache at the time ms2mit.exe ran. This leads to cryptic errors when running SAPgui, etc. and no prompting by Leash for a password to get fresh tickets. (If the API: ccache is empty, Leash should prompt.) We believe this is because the LSA doesn't allow direct access to TGTs when an admin user is logged in with UAC active.</div></td>
</tr>
</table>
TomYu
https://k5wiki.kerberos.org/wiki?title=KfW_UAC_interactions&diff=5597&oldid=prev
TomYu at 03:43, 17 February 2016
2016-02-17T03:43:33Z
<p></p>
<table class="diff diff-contentalign-left" data-mw="interface">
<col class='diff-marker' />
<col class='diff-content' />
<col class='diff-marker' />
<col class='diff-content' />
<tr style='vertical-align: top;' lang='en'>
<td colspan='2' style="background-color: white; color:black; text-align: center;">← Older revision</td>
<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 03:43, 17 February 2016</td>
</tr><tr>
<td colspan="2" class="diff-lineno">Line 14:</td>
<td colspan="2" class="diff-lineno">Line 14:</td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Leash has some code to copy the LSA creds to the API: ccache during startup, but it seems to notice when the TGT session key is unavailable and refuses to copy anything. ms2mit.exe apparently uses different logic and copies all the existing service tickets but not the (inaccessible) TGT. In theory this means that not running ms2mit.exe will cause something mostly reasonable to happen: domain users without local Administrator rights get a usable API: ccache, and users with local Administrator rights get an empty API: ccache and a password prompt. Unfortunately, when Richard disabled running ms2mit.exe in the logon script, some users reported problems. Were these running an older KfW release that had different Leash startup logic for copying LSA creds?</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Leash has some code to copy the LSA creds to the API: ccache during startup, but it seems to notice when the TGT session key is unavailable and refuses to copy anything. ms2mit.exe apparently uses different logic and copies all the existing service tickets but not the (inaccessible) TGT. In theory this means that not running ms2mit.exe will cause something mostly reasonable to happen: domain users without local Administrator rights get a usable API: ccache, and users with local Administrator rights get an empty API: ccache and a password prompt. Unfortunately, when Richard disabled running ms2mit.exe in the logon script, some users reported problems. Were these running an older KfW release that had different Leash startup logic for copying LSA creds?</div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>TODO:</div></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td colspan="2" class="diff-empty"> </td>
<td class="diff-marker">+</td>
<td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Investigate how the LSA cache behaves in a machine not joined to the WIN domain. Such a machine might not know how to contact ATHENA realm KDCs or how to do cross-realm to WIN correctly (this is highly speculative).</div></td>
</tr>
</table>
TomYu
https://k5wiki.kerberos.org/wiki?title=KfW_UAC_interactions&diff=5596&oldid=prev
TomYu: New page: This page attempts to characterize what we know about KfW interactions with UAC. Conditions: * WIN.MIT.EDU domain joined Windows workstation * domain user with local Administrator rights...
2016-02-05T23:10:17Z
<p>New page: This page attempts to characterize what we know about KfW interactions with UAC. Conditions: * WIN.MIT.EDU domain joined Windows workstation * domain user with local Administrator rights...</p>
<p><b>New page</b></p><div>This page attempts to characterize what we know about KfW interactions with UAC.<br />
<br />
Conditions:<br />
<br />
* WIN.MIT.EDU domain joined Windows workstation<br />
* domain user with local Administrator rights logs in<br />
* UAC is active<br />
* ms2mit.exe runs from the login scripts<br />
* user hasn't set a default ccache location for KfW in the registry<br />
<br />
The result is an API: ccache with no TGTs that contains only the service tickets that existed in the LSA ccache at the time ms2mit.exe ran. This leads to cryptic errors when running SAPgui, etc. and no prompting by Leash for a password to get fresh tickets. (If the API: ccache is empty, Leash should prompt.) We believe this is because the LSA doesn't allow direct access to TGTs when an admin user is logged in with UAC active.<br />
<br />
The Windows LSA apparently creates two sets of access tokens (Kerberos credentials? how equivalent are they?) when a domain user with local Administrator rights logs in. One set has full Administrator rights on the local machine, and the other has those rights filtered (presumably by filtering the PAC? See https://support.microsoft.com/en-us/kb/937624 but it's not very clear due to vague terminology). Allowing access to the TGT session key in a non-elevated user session might allow a user to get a ticket with an unfiltered PAC and thereby gain access to unrestricted local Administrator rights while bypassing UAC.<br />
<br />
Leash has some code to copy the LSA creds to the API: ccache during startup, but it seems to notice when the TGT session key is unavailable and refuses to copy anything. ms2mit.exe apparently uses different logic and copies all the existing service tickets but not the (inaccessible) TGT. In theory this means that not running ms2mit.exe will cause something mostly reasonable to happen: domain users without local Administrator rights get a usable API: ccache, and users with local Administrator rights get an empty API: ccache and a password prompt. Unfortunately, when Richard disabled running ms2mit.exe in the logon script, some users reported problems. Were these running an older KfW release that had different Leash startup logic for copying LSA creds?</div>
TomYu