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Microsoft yesterday released a new out-of-band cumulative update KB4594442 for Windows 10 version 1809 devices. This Windows 10 OS Build 17763.1579 comes with the following non-security improvements.
Addresses issues with Kerberos authentication related to the PerformTicketSignature registry subkey value in CVE-2020-17049, which was a part of the November 10, 2020 Windows update. The following issues might occur on writable and read-only domain controllers (DC):
- Kerberos service tickets and ticket-granting tickets (TGT) might not renew for non-Windows Kerberos clients when PerformTicketSignature is set to 1 (the default).
- Service for User (S4U) scenarios, such as scheduled tasks, clustering, and services for line-of-business applications, might fail for all clients when PerformTicketSignature is set to 0.
- S4UProxy delegation fails during ticket referral in cross-domain scenarios if DCs in intermediate domains are inconsistently updated and PerformTicketSignature is set to 1.
If you are using Windows Update, the latest update will be offered to you automatically. You can also download it manually from the Microsoft Update Catalog.