Microsoft has fixed a known issue causing authentication problems when Credential Guard is enabled on systems using the Kerberos PKINIT pre-auth security protocol. According to Redmond, these ...

Microsoft has confirmed that Windows updates released since August 29, 2025, are breaking authentication on systems sharing Security Identifiers. Windows uses unique alphanumeric strings known as ...

Since August 29th, many users have reported various login problems on Windows 11 and Windows Server 2025, and that includes both Windows 11 24H2 and the newer Windows 11 25H2. According to Microsoft’s ...

Microsoft has resolved a known issue that prevented some Windows Server 2016 systems from installing the June 2026 security ...

The Windows security updates, especially for servers from April, have partly severe side effects. Some Windows servers restart unexpectedly. Furthermore, there are indications that domain admin logins ...

A fix introduced into Windows last month to close a weakness in Kerberos authentication is causing logon failures for some Windows Hello for Business (WHfB) users, Microsoft has warned. In theory, the ...