Windows Update KB3177723, KB3179573, and KB3179574

Windows Update[German]Microsoft has released updates KB3177723, KB3179573, and KB3179574 on August 16,  2016 form Windows 7 SP1 and Windows 8.1. Here are a few details about this optional and important updates.


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The first queries has reached me from users of my German blog post. But other queries has been made at MS Answers and here. Using my Windows 7 SP1 Update search showed me Updates KB3179573 (optional) and KB3177723 (wimportand).

Windows Update

Update KB3177723: 2016 — Egypt cancels DST

Update KB3177723 is optional – is released, because Egypt has permanently canceled its observation of daylight savings time (DST). The DST adjustment for this year was scheduled to begin on Friday, July 8, 2016, at midnight (24:00). This change affects the time zone (UTC+02:00) Cairo. The update is available for the following Windows versions.

  • Windows Server 2012 R2
  • Windows Server 2012
  • Windows 8.1
  • Windows Server 2008 R2 Service Pack 1 (SP1)
  • Windows 7 SP1
  • Windows Server 2008 Service Pack 2 (SP2)
  • Windows Vista SP2

In Windows 10 this update is contained in the last cumulative Update (see my blog post Windows 10: Updates KB3176492, KB3176493 and KB3176495).

Update KB3179573: August 2016 Update Rollup for Windows 7 SP1

Optional update KB3179573 (August 2016 update rollup for Windows 7 SP1 and Windows Server 2008 R2 SP1) includes some new improvements and fixes for the Windows 7 Service Pack 1 (SP1) and Windows Server 2008 R2 SP1 platform. The fixes has been addressed in Windows 7 SP1 and Windows Server 2008 R2 SP1 update history page. Key changes, accoring to Microsoft, include:


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  • Improved performance on specific networks that have a high-bandwidth and low latency.
  • Addressed issue with users encountering a bugcheck, when trying to access a domain DFS namespace (for example, \\contoso.com\SYSVOL) on a computer that is configured to require mutual authentication (by using the UNC Hardened Access feature).
    This problem may occur if the selected domain controller has security updateKB3161561 installed, and if the SmbServerNameHardeningLevel registry entry is configured to a non-zero value on the domain controller.

This optional update is available via Windows Update, via Microsoft Update Catalog and via Microsoft Download Center (see). Microsoft recommends to install this update, and I see no reason to block it.

Update KB3179574: August 2016 Update Rollup for Windows 8.1

Optional update KB3179574 (August 2016 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2) includes some new improvements and fixes for the Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 platforms. The improvements and key changes has been documented at Windows 8.1 and Windows Server 2012 R2 update history page:

  • Addressed issue that causes Windows Gateway to remain disconnected instead of failing over when a failure occurs.
  • Addressed an issue that didn’t prevent other applications from using the desktop area used by application desktop toolbar (also called “appbar”) when run as a RemoteApp.
  • Addressed an issue with OLE drag and drop in SharePoint after installing KB3072633, that prevents the download of a file by dragging and dropping it from Internet Explorer to Windows Explorer.
  • Addressed issue in the Windows kernel that causes Skype for Business (previously known as Lync) to stop working.
  • Addressed issue that prevents the disabling of read or write access to removable storage media when the Audit Removable Storage Group Policy is enabled and prevents applying a Group Policy at the user level.
  • Addressed issue that causes the loss of available memory when running queries using the domain name service (DNS).
  • Improved performance by addressing an issue that was causing duplicate broadcast data packets to be received by each network interface card (NIC) and sent to applications, when NIC Teaming or Load Balancing/Failover (LBFO) is set-up in active/passive mode.
  • Addressed issue that prevents the automatic deletion of Extensible Storage Engine (ESE) transaction logs after reaching the threshold. The issue can occur if ESE transaction logs are being taken periodically such as Dynamic Host Configuration Protocol (DHCP).
  • Addressed issue that sometimes causes backups to fail or servers to hang with drivers that use the IoVolumeDeviceToDosName() routine.
  • Addressed issue that was resulting in a spike in DNS entries, when DNSSEC validation is enabled in an environment where there were queries for nonexistent DNS records in domains where the DNS servers have conditional forwarders.
  • Addressed issue with domain controllers that periodically reboot after a Local Security Authority Subsystem Service (LSASS) module fault, causing the interruption of application and services that are bound to the domain controller at that time.
  • Addressed issue with DNS servers that get stuck in a loop and stop responding to DNS queries.
  • Addressed issue with cluster services that stop working when network loss logging occurs. This occurs when a network connection is down and virtual machines (VM) are configured with one possible owner.
  • Addressed issue that allows users to change a password from an external network via Wireless Application Protocol (WAP) when Proxy Enabled is set to No. This happens in an environment that uses Active Directory Federation Services (ADFS) and Web Application proxy (WAP) for authentication.
  • Addressed issue with data loss if a failover occurs when a Network File System (NFS) client tries to write data to an NFS server.
  • Addressed issue in Server Message Block (SMB) server that causes the server to crash intermittently with error 0x50.
  • Certificate logon fails with error code 0xC000006D (error message: “The attempted logon is invalid. This is either due to a bad username or authentication information.”) or 1326 (error message: “Logon failure: unknown user name or bad password.”) This problem may occur if there are multiple certificate logon attempts being processed simultaneously by a Windows Server 2012 R2 Domain Controller.
  • Addressed issue that causes the server to bugcheck when mounting an NFS share after installing KB3025097.
  • Addressed issue with users seeing an “Access Denied” error message, when trying to access a domain DFS namespace (for example, \\contoso.com\SYSVOL) on a computer that is configured to require mutual authentication (by using the UNC Hardened Access feature).
    This problem may occur if the selected domain controller has security update KB3161561 installed, and if the SmbServerNameHardeningLevel registry entry is configured to a non-zero value on the domain controller.
  • Addressed issue that causes domain controllers (DC) to stop working when generating compounded tickets.

This optional update is available via Windows Update, via Microsoft Update Catalog and via Microsoft Download Center (see). Microsoft recommends to install this update, and I see no reason to block it.

Similar articles:
New update model for Windows 7 SP1 and Windows 8.1
Windows 10: Updates KB3176492, KB3176493 and KB3176495
Cumulative Update KB3176931 for Windows 10 version 1607
IE 11 security updates June/July 2016 are causing issues
Windows 10 Anniversary Update – FAQ and Tips
Windows-Update KB3161102 axes Windows Journal
Windows 10: Cumulative Update KB3176925 (07/22/2016)
Windows 8.1 July 2016 Update Rollup KB3172614
Update Rollup KB3172605 for Windows 7 SP1/Server 2008 R2 SP1 screws up Bluetooth
Optional Windows updates KB3035583, KB3173040 (July 19, 2016)
Windows 7: Slow update search (July 2016)
Microsoft Patchday: Updates July 2016
Windows 10: July 2016 updates KB3173428, KB3172985, KB3163912


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4 Responses to Windows Update KB3177723, KB3179573, and KB3179574

  1. Günter Born says:

    Printing issues with KB 3177723?

    One of my German blog readers (Marc F.) informed me about printing issues with Update KB3177723. He wrote:

    KB 3177723 is causing printing issues on a print server with HP printer drivers. Not all jobs are printed. I did a test and printed two documents. Both printer jobs are listed in printer spooler. But only the first document has been printed. After deinstalling KB3177723 on my client, printing via print server works again.

    Thanks Marc F. for the information. Searching the web, I could not find another case – but maybe someone else can confirm that behavior.

    Update: I’ve addressed the printing issues related to security update MS16-098 in a separate blog post Printing issues with Microsoft Security Patch MS16-098.

  2. Robert White says:

    After installing KB3179573 and KB317723 The sound for Youtube and AOL web sites and the sound was distorted. I used system restore instead of un-installing to remove KB3179573, rebooted, and the problem disappeared.

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