We are now in the second Tuesday of September, and in usual Microsoft fashion, that means it's Patch Tuesday. Every supported version of Windows is getting updates today, and that includes Windows 8.1. Plus, if you're paying for extended security updates (ESU), there are new updates for Windows 7, too.
As usual, there are two flavors of the monthly updates, one containing only security fixes and one with other quality fixes, the monthly rollup update.
For Windows 8.1, the monthly rollup is KB4577066, and it can be downloaded manually here. It contains the following fixes:
- Updates time zone information for Yukon, Canada.
- Addresses an issue when you evaluate the compatibility status of the Windows ecosystem to help ensure application and device compatibility for all updates to Windows.
- Addresses a security vulnerability issue with user proxies and HTTP-based intranet servers. After you install this update, HTTP-based intranet servers cannot leverage a user proxy to detect updates by default. Scans that use these servers will fail if the clients do not have a configured system proxy. If you must leverage a user proxy, you must configure the behavior by using the Windows Update policy “Allow user proxy to be used as a fallback if detection using system proxy fails.” This change does not affect customers who secure their Windows Server Update Services (WSUS) servers that use the Transport Layer Security (TLS) or Secure Sockets Layer (SSL) protocols. For more information, see Ensuring clients stay secure, changes to scans against Windows Server Update Service (WSUS) servers.
- Security updates to Windows Media, Windows Input and Composition, Windows App Platform and Frameworks, Windows Graphics, Windows Cloud Infrastructure, Windows Authentication, Windows Cryptography, Windows Fundamentals, Windows Kernel, Windows Hybrid Cloud Networking, Windows Peripherals, Windows Storage and Filesystems, Windows Network Security and Containers, Windows Update Stack, the Microsoft Scripting Engine, and Windows SQL components.
It also has a single known issue that's been around for months:
| Symptom | Workaround |
|---|---|
| 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. |
Do one of the following:
Microsoft is working on a resolution and will provide an update in an upcoming release. |
As for the security-only update, it's KB4577071, and it can be downloaded manually here. It only includes these updates:
- Security updates to Windows Media, Windows Input and Composition, Windows App Platform and Frameworks, Windows Graphics, Windows Cloud Infrastructure, Windows Authentication, Windows Cryptography, Windows Fundamentals, Windows Kernel, Windows Hybrid Cloud Networking, Windows Peripherals, Windows Storage and Filesystems, Windows Network Security and Containers, Windows Update Stack, and Windows SQL components.
It has the same known issue as the monthly rollup.
As for Windows 7, which - again - is only getting updates for paying ESU customers, the monthly rollup update is KB4577051, and it can be downloaded manually here. Here's what's changed:
- Updates time zone information for Yukon, Canada.
- Addresses a security vulnerability issue with user proxies and HTTP-based intranet servers. After you install this update, HTTP-based intranet servers cannot leverage a user proxy to detect updates by default. Scans that use these servers will fail if the clients do not have a configured system proxy. If you must leverage a user proxy, you must configure the behavior by using the Windows Update policy “Allow user proxy to be used as a fallback if detection using system proxy fails.” This change does not affect customers who secure their Windows Server Update Services (WSUS) servers that use the Transport Layer Security (TLS) or Secure Sockets Layer (SSL) protocols. For more information, see Ensuring clients stay secure, changes to scans against Windows Server Update Service (WSUS) servers.
- Security updates to Windows App Platform and Frameworks, Windows Graphics, Windows Media, Windows Cloud Infrastructure, Windows Authentication, Windows Cryptography, Windows Kernel, Windows Hybrid Cloud Networking, Windows Peripherals, Windows Storage and Filesystems, Windows Network Security and Containers, the Microsoft Scripting Engine, and Windows SQL components.
The only known issue is the same as for Windows 8.1. Microsoft also notes that the update will fail to install if you don't have a valid key to receive security updates beyond the original end of support date.
As for the security-only update, it's KB4577053, and it can be downloaded manually here. It contains these changes:
- Security updates to Windows App Platform and Frameworks, Windows Graphics, Windows Media, Windows Cloud Infrastructure, Windows Authentication, Windows Cryptography, Windows Kernel, Windows Hybrid Cloud Networking, Windows Peripherals, Windows Storage and Filesystems, Windows Network Security and Containers, and Windows SQL components.
It has the same known issue mentioned above.
As a reminder, the quality updates are usually automatically installed through Windows Update, but you'll need to download the security-only updates manually if you want them.
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