Windows 8.1 and Windows Server 2012 R2
Find information on known issues for Windows 8.1 and Windows Server 2012 R2. Looking for a specific issue? Press CTRL + F (or Command + F if you are using a Mac) and enter your search term(s).
Windows 10, version 1903 rollout begins
Get the update >
What’s new in Windows Update for Business
Read about the latest enhancements >
What’s new for businesses and IT pros in Windows 10
Get an overview >
Known issues
This table offers a summary of current active issues and those issues that have been resolved in the last 30 days.
| Summary | Originating update | Status | Last updated |
| Devices starting using PXE from a WDS or SCCM servers may fail to start Devices that start up using Preboot Execution Environment (PXE) images from Windows Deployment Services (WDS) may fail to start with error "0xc0000001." See details > | June 11, 2019 KB4503276 | Resolved KB4512478 | August 17, 2019 02:00 PM PT |
| Apps using Visual Basic 6 (VB6), VBA, and VBScript may stop responding with error Applications that were made using Visual Basic 6 (VB6), macros using Visual Basic for Applications (VBA), and VBScript may stop responding and you may receive an error. See details > | August 13, 2019 KB4512488 | Resolved KB4517298 | August 16, 2019 02:00 PM PT |
| System may be unresponsive after restart with certain McAfee antivirus products Devices with McAfee Endpoint Security Threat Prevention 10.x, Host Intrusion Prevention 8.0, or VirusScan Enterprise 8.8 may be slow or unresponsive at startup. See details > | April 09, 2019 KB4493446 | Resolved External | August 13, 2019 06:59 PM PT |
| MacOS may be unable to access network shares via CIFS or SMBv1 on Windows devices You may receive an error on MacOS when trying to access network shares via CIFS or SMBv1 on Windows devices that installed updates on June 11, 2019 or later. See details > | June 11, 2019 KB4503276 | Resolved External | August 09, 2019 07:03 PM PT |
| 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. See details > | April 25, 2019 KB4493443 | Mitigated | May 15, 2019 05:53 PM PT |
| Certain operations performed on a Cluster Shared Volume may fail Certain operations, such as rename, performed on files or folders on a Cluster Shared Volume (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
August 2019
| Details | Originating update | Status | History |
| Apps using Visual Basic 6 (VB6), VBA, and VBScript may stop responding with error After installing KB4512488, applications that were made using Visual Basic 6 (VB6), macros using Visual Basic for Applications (VBA), and scripts or apps using Visual Basic Scripting Edition (VBScript) may stop responding and you may receive an "invalid procedure call error." Affected platforms:
Resolution: This issue was resolved in KB4517298. The ‘optional’ update is now available on Microsoft Update Catalog and Windows Server Update Services (WSUS). Back to top | August 13, 2019 KB4512488 | Resolved KB4517298 | Resolved: August 16, 2019 02:00 PM PT Opened: August 14, 2019 03:34 PM PT |
| MacOS may be unable to access network shares via CIFS or SMBv1 on Windows devices You may receive an error on your Apple MacOS device when trying to access network shares via CIFS or SMBv1 on a Windows devices that has installed updates on June 11, 2019 (KB4503276) or later. When you encounter this issue, in MacOS you may receive the error, “There was a problem connecting to the server “{Server Host Name}”. Check the server name or IP address, and then try again. If you continue to have problems, contact your system administrator.” Affected platforms:
Resolution: For guidance on this issue, see the Apple support article If your Mac can't use NTLM to connect to a Windows server. There is no update for Windows needed for this issue. Back to top | June 11, 2019 KB4503276 | Resolved External | Last updated: August 09, 2019 07:03 PM PT Opened: August 09, 2019 04:25 PM PT |
July 2019
| Details | Originating update | Status | History |
| Devices starting using PXE from a WDS or SCCM servers may fail to start Devices that start up using Preboot Execution Environment (PXE) images from Windows Deployment Services (WDS) or System Center Configuration Manager (SCCM) may fail to start with the error "Status: 0xc0000001, Info: A required device isn't connected or can't be accessed" after installing KB4503276 on a WDS server. Affected platforms:
Resolution: This issue was resolved in KB4512478. Back to top | June 11, 2019 KB4503276 | Resolved KB4512478 | Resolved: August 17, 2019 02:00 PM PT Opened: July 10, 2019 02:51 PM PT |
May 2019
| Details | Originating update | Status | History |
| 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:
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.
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 |
April 2019
| Details | Originating update | Status | History |
| System may be unresponsive after restart with certain McAfee antivirus products Microsoft and McAfee have identified an issue on devices with McAfee Endpoint Security (ENS) Threat Prevention 10.x or McAfee Host Intrusion Prevention (Host IPS) 8.0 or McAfee VirusScan Enterprise (VSE) 8.8 installed. It may cause the system to have slow startup or become unresponsive at restart after installing this update. Affected platforms:
Resolution: This issue has been resolved. McAfee has released an automatic update to address this issue. Guidance for McAfee customers can be found in the following McAfee support articles:
Back to top | April 09, 2019 KB4493446 | Resolved External | Last updated: August 13, 2019 06:59 PM PT Opened: April 09, 2019 10:00 AM PT |
January 2019
| Details | Originating update | Status | History |
| 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:
Workaround: Do one of the following:
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 |