January 3, 2018—KB4056893 (OS Build 10240.17738)

2018-06-14T23:09:35
ID KB4056893
Type mskb
Reporter Microsoft
Modified 2018-06-14T23:10:53

Description

<html><body><p>Learn more about update KB4056893, including improvements and fixes, any known issues, and how to get the update.</p><h2>Improvements and fixes</h2><div><p>This update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:</p><ul><li><span>Addresses issue where using smart cards on a Windows Terminal Server system may cause excessive memory usage. </span></li><li>Security updates to Internet Explorer, Microsoft Scripting Engine, Microsoft Edge, Windows Graphics, Windows Kernel, Windows Datacenter Networking, and Windows SMB Server.</li></ul><p>If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.</p><p><span><span><span><span>For more information about the resolved security vulnerabilities, see the </span></span></span></span><span><span><span><a href="https://portal.msrc.microsoft.com/security-guidance"><u>Security Update Guide</u></a><u>.</u></span></span></span></p><div class="alert-band"><div class="alert alert-info" role="alert"><p class="alert-title">Windows Update Client Improvement</p><div class="row"><div class="col-xs-24"><p>Microsoft will release an update directly to the Windows Update Client to improve Windows Update reliability. It will only be offered to devices that haven't installed the most recent updates.</p></div></div></div></div></div><h2>Known issues in this update</h2><div><table class="table"><tbody><tr><td>Symptom</td><td>Workaround</td></tr><tr><td><p>When calling CoInitializeSecurity, the call will fail if passing RPC_C_IMP_LEVEL_NONE under certain conditions.</p><p>When calling CoInitializeSecurity, the call may fail when passing RPC_C_AUTHN_LEVEL_NONE as the authentication level. The error returned on failure is STATUS_BAD_IMPERSONATION_LEVEL.</p></td><td><p><span>This issue is resolved in <a data-content-id="4075199" data-content-type="article" href="" managed-link="" target="_blank">KB</a></span><span><a data-content-id="4075199" data-content-type="article" href="" managed-link="" target="_blank">4075199</a>.</span></p></td></tr><tr><td>Microsoft has reports of some customers on a small subset of older AMD processors getting into an unbootable state after installing this KB.<br/> <br/>To prevent this issue, Microsoft will temporarily pause Windows OS updates to devices with impacted AMD processors at this time.</td><td><p><span>This issue is resolved in <a data-content-id="4075199" data-content-type="article" href="" managed-link="" target="_blank">KB</a></span><span><a data-content-id="4075199" data-content-type="article" href="" managed-link="" target="_blank">4075199</a>.</span></p></td></tr><tr><td><span>Because of an issue that affects some versions of antivirus software, this fix applies only to computers on which the antivirus ISV updated the ALLOW REGKEY.</span></td><td><p><span><span></span></span>This issue is resolved in <a data-content-id="4088786" data-content-type="article" href="" managed-link="" target="_blank">KB4088786</a>.</p><span><span><span></span></span></span></td></tr><tr><td>After installing this update, some users may experience issues logging into some websites when using third-party account credentials in Microsoft Edge. </td><td>This issue is resolved in <a data-content-id="4074596" data-content-type="article" href="" managed-link="" target="_blank">KB4074596</a>.</td></tr></tbody></table></div><h2>How to get this update</h2><div><p>This update will be downloaded and installed automatically from Windows Update. To get the standalone package for this update, go to the <a href="http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4056893">Microsoft Update Catalog</a> website.</p><p><strong>File information</strong></p><p>For a list of the files that are provided in this update, download the <a data-content-id="" data-content-type="" href="http://download.microsoft.com/download/E/F/A/EFA4FFF6-51DA-4933-95BF-C5CC14D4E7DC/4056893.csv" target="_blank">file information for cumulative update 4056893</a>.</p></div></body></html>