Microsoft has fastened a number of recognized points that triggered Blue Display screen of Demise (BSOD) and set up points on Home windows Server 2025 methods with a excessive core depend.
As Redmond stated when it acknowledged this recognized subject in October, impacted units might expertise a variety of signs, together with Home windows Server 2025 set up or upgrading processes failing or hanging, and server start-up taking as a lot as three hours or extra in some circumstances.
Affected methods may also get blue display screen errors when launching, restarting, or making an attempt to run apps. Nonetheless, these points are usually not constantly triggered on impacted servers.
“Servers which have a excessive variety of logical processors may expertise points operating Home windows Server 2025. That is presently noticed on servers which have greater than 256 logical processors,” the corporate stated.
IT admins who need to discover out if these recognized points influence their Home windows Server 2025 methods are suggested to examine in the event that they present as having over 256 logical processors on the Efficiency tab within the Home windows Job Supervisor.
In an replace to the preliminary Home windows launch well being entry, Microsoft says these points have been addressed in updates launched for the reason that KB5046617 cumulative replace issued as a part of the November Patch Tuesday.
“We suggest you put in the newest safety replace on your gadget because it comprises necessary enhancements and subject resolutions, together with this one,” Redmond added.
Admins who cannot instantly set up updates launched since November can nonetheless work round these points by limiting the variety of logical processors on affected units to 256 or below utilizing these directions:
- Restart your server and enter the UEFI Setup. Navigate via the firmware menus, which can fluctuate by producer.
- Find any choice that permits you to modify the variety of cores per socket.
- Set the variety of cores per socket to a price that ensures the overall variety of logical processors is 256 or fewer. Vital: The entire variety of logical processors is calculated by first multiplying the variety of sockets by the variety of cores per socket after which multiplying that consequence by the variety of logical processors per core.
- Restart the server.
Earlier this month, Microsoft warned that some Home windows Server 2025 area controllers (DCs) may turn out to be inaccessible after being restarted, inflicting companies and apps to fail.
The corporate additionally stated that some Home windows customers may be unable to log into their accounts utilizing Home windows Howdy after putting in the April 2025 safety updates on shopper (Home windows 11 24H2) and server (Home windows Server 2025) methods.
Microsoft additionally fastened a bug that triggered authentication points when Credential Guard was enabled on methods utilizing the Kerberos PKINIT pre-auth safety protocol, and it launched a brand new Home windows 11 24H2 safeguard maintain for methods with SenseShield Know-how’s sprotect.sys driver (utilized by safety or enterprise software program) due to incompatibility points triggering blue or black display screen of loss of life (BSOD) errors.
