Improvements and fixes
This non-security update includes improvements and fixes that were a part of
KB4034664 (released August 8, 2017) and also includes these new quality improvements as a preview of the next Monthly Rollup update:
- Addressed an issue where spoolsv.exe crashes.
- Addressed issue where a DNS server stops working and doesn't respond to DNS requests in Windows Server 2008 R2.
- Addressed issue where WordPad crashes on launch.
For more information about the resolved security vulnerabilities, see the
Security Update Guide.
Known issues in this update
Symptom
Due to a defect in WLDAP32.DLL, applications that perform LDAP referral chasing can consume too many dynamic TCP ports (potentially exhausting them) after installing KB4025337 and KB4025341. Applications and roles known to make these referrals may include Outlook.exe, DFSR, and others.
Workaround
To work around the problem, restart services or applications that perform LDAP referral chasing to free TCP dynamic ports. A reboot will also free ports. For example, restarting Outlook will free ports used by that application.
Symptom
If restarting applications that perform LDAP referral chasing returns normal functionality on machines that installed KB4025337 and KB4025341, you may be experiencing this issue.
Workaround
To work around the problem for cluster computers hosting the DFSR service, place the virtual cluster object under the Computers container to avoid reaching the referral chasing search, which leads to the dynamic port leak.
Microsoft is working on a resolution and will provide an update in an upcoming release.
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 4034670.