Windows 8.1 and Windows Server 2012 R2

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Known issues

This table offers a summary of current active issues and those issues that have been resolved in the last 30 days.

SummaryOriginating updateStatusLast updated
You might encounter issues with KB4502496
You might encounter issues trying to install or after installing KB4502496

See details >		February 11, 2020
KB4502496		Mitigated
February 15, 2020
01:22 AM PT
TLS connections might fail or timeout
Transport Layer Security (TLS) connections might fail or timeout when connecting or attempting a resumption.

See details >		October 08, 2019
KB4520005		Mitigated External
November 05, 2019
03:36 PM PT
Japanese IME doesn't show the new Japanese Era name as a text input option
With previous dictionary updates installed, the Japanese IME doesn't show the new Japanese Era name as an input option.

See details >		April 25, 2019
KB4493443		Mitigated
May 15, 2019
05:53 PM PT
Certain operations performed on a Cluster Shared Volume may fail
Operations performed on files or folders on a CSV may fail with the error: STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5).

See details >		January 08, 2019
KB4480963		Mitigated
April 25, 2019
02:00 PM PT

Issue details

February 2020

DetailsOriginating updateStatusHistory
You might encounter issues with KB4502496
You might encounter issues trying to install or after installing KB4502496.

Affected platforms:
  • Client: Windows 10, version 1909; Windows 10, version 1903; Windows 10, version 1809; Windows 10 Enterprise LTSC 2019; Windows 10, version 1803; Windows 10, version 1709; Windows 10 Enterprise LTSC 2016; Windows 10, version 1607; Windows 10 Enterprise LTSC 2015; Windows 8.1
  • Server: Windows Server, version 1909; Windows Server, version 1903; Windows Server, version 1809; Windows Server 2019; Windows Server, version 1803; Windows Server, version 1709 ; Windows Server 2016; Windows Server 2012 R2; Windows Server 2012
Workaround: To help a sub-set of affected devices, the standalone security update (KB4502496) has been removed and will not re-offered from Windows Update, Windows Server Update Services (WSUS) or Microsoft Update Catalog. Note This does not affect any other update, including Latest Cumulative Updates (LCUs), Monthly Rollups or Security Only updates.

If this update is installed and you are experiencing issues, you can uninstall this update.
  1. Select the start button or Windows Desktop Search and type update history and select View your Update history.
  2. On the Settings/View update history dialog window, Select Uninstall Updates.
  3. On the Installed Updates dialog window, find and select KB4502496 and select the Uninstall button.
  4. Restart your device.
 
Next steps: We are working on an improved version of this update in coordination with our partners and will release it in a future update.

Back to top		February 11, 2020
KB4502496		Mitigated
Last updated:
February 15, 2020
01:22 AM PT

Opened:
February 15, 2020
12:02 AM PT

November 2019

DetailsOriginating updateStatusHistory
TLS connections might fail or timeout
Updates for Windows released October 8, 2019 or later provide protections, tracked by CVE-2019-1318, against an attack that could allow unauthorized access to information or data within TLS connections. This type of attack is known as a man-in-the-middle exploit. Windows might fail to connect to TLS clients and servers that do not support Extended Master Secret for resumption (RFC 7627). Lack of RFC support might cause one or more of the following errors or logged events:
  • "The request was aborted: Could not create SSL/TLS secure Channel"
  • SCHANNEL event 36887 is logged in the System event log with the description, "A fatal alert was received from the remote endpoint. The TLS protocol defined fatal alert code is 20.​"
Affected platforms:
  • Client: Windows 10, version 1903; Windows 10, version 1809; Windows 10 Enterprise LTSC 2019; Windows 10, version 1803; Windows 10, version 1709; Windows 10, version 1703; Windows 10 Enterprise LTSC 2016; Windows 10, version 1607; Windows 10 Enterprise LTSC 2015; Windows 8.1; Windows 7 SP1
  • Server: Windows Server, version 1903; Windows Server, version 1809; Windows Server 2019; Windows Server, version 1803; Windows Server, version 1709 ; Windows Server 2016; Windows Server 2012 R2; Windows Server 2012; Windows Server 2008 R2 SP1; Windows Server 2008 SP2

Next Steps: Connections between two devices running any supported version of Windows should not have this issue when fully updated. There is no update for Windows needed for this issue. These changes are required to address a security issue and security compliance. For information, see KB4528489.

Back to top		October 08, 2019
KB4520005		Mitigated External
Last updated:
November 05, 2019
03:36 PM PT

Opened:
November 05, 2019
03:36 PM PT

May 2019

DetailsOriginating updateStatusHistory
Japanese IME doesn't show the new Japanese Era name as a text input option
If previous dictionary updates are installed, the Japanese input method editor (IME) doesn't show the new Japanese Era name as a text input option.

Affected platforms:
  • Client: Windows 8.1
  • Server: Windows Server 2012 R2; Windows Server 2012
Workaround:
If you see any of the previous dictionary updates listed below, uninstall it from Programs and features > Uninstall or change a program. New words that were in previous dictionary updates are also in this update.
  • Update for Japanese Microsoft IME Standard Dictionary (15.0.2013)
  • Update for Japanese Microsoft IME Standard Extended Dictionary (15.0.2013)
  • Update for Japanese Microsoft IME Standard Dictionary (15.0.1215)
  • Update for Japanese Microsoft IME Standard Extended Dictionary (15.0.1215)
  • Update for Japanese Microsoft IME Standard Dictionary (15.0.1080)
  • Update for Japanese Microsoft IME Standard Extended Dictionary (15.0.1080)

Back to top		April 25, 2019
KB4493443		Mitigated
Last updated:
May 15, 2019
05:53 PM PT

Opened:
May 15, 2019
05:53 PM PT

January 2019

DetailsOriginating updateStatusHistory
Certain operations performed on a Cluster Shared Volume may fail
Certain operations, such as rename, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, “STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)”. This occurs when you perform the operation on a CSV owner node from a process that doesn’t have administrator privilege.

Affected platforms: 
  • Client: Windows 10, version 1809; Windows 10 Enterprise LTSC 2019; Windows 10, version 1803; Windows 10, version 1709; Windows 10, version 1703; Windows 10, version 1607; Windows 10 Enterprise LTSC 2016; Windows 10, version 1507; Windows 10 Enterprise LTSB 2015; Windows 8.1
  • Server: Windows Server, version 1809; Windows Server 2019; Windows Server, version 1803; Windows Server, version 1709; Windows Server 2016; Windows Server 2012 R2; Windows Server 2012
Workaround: Do one of the following:
  • Perform the operation from a process that has administrator privilege.
  • Perform the operation from a node that doesn’t have CSV ownership.
Next steps: Microsoft is working on a resolution and will provide an update in an upcoming release.

Back to top		January 08, 2019
KB4480963		Mitigated
Last updated:
April 25, 2019
02:00 PM PT

Opened:
January 08, 2019
10:00 AM PT