August 30, 2018—KB4343891 (Preview of Monthly Rollup)

Applies to: Windows 8.1Windows Server 2012 R2

Improvements and fixes


This non-security update includes improvements and fixes that were a part KB4343898 (released August 14, 2018) and also includes these new quality improvements as a preview of the next Monthly Rollup update:

  • Addresses encoding issues with the Bitcoin symbol. 
  • Addresses an issue that causes TPM certificate enrollment to fail with application event log entries for the Microsoft-Windows-CertificateServicesClient-CertEnroll source. The two events reported are Event ID 85 and Event ID 13. 
  • Addresses an issue that causes svchost.exe to stop working intermittently. This issue occurs when the SessionEnv service is running, which causes a partial load of the user’s configuration during a Remote Desktop session.
  • Extends the Key Management Service (KMS) to support the upcoming Windows 10 client Enterprise LTSC and Windows Server editions. For more information, see KB4347075
  • Addresses an issue in Internet Explorer 11 that may cause a blank page to appear for some redirects. Additionally, if you open a site that uses Active Directory Federation Services (AD FS) or Single sign-on (SSO), the site may be unresponsive.

Known issues in this update


Microsoft is not currently aware of any issues with this update.

How to get this update


This is provided as an optional update on Windows Update. For more information about how to run Windows Update, see How to get an update through Windows Update. To get the standalone package for this update, go to the Microsoft Update Catalog website.

File information

For a list of the files that are provided in this update, download the file information for update 4343891.