About this tag
Sign-in failures on Windows 11 can stem from problematic updates like KB5078127, which Microsoft confirmed caused credential prompt failures in remote connection scenarios such as Windows App, Azure Virtual Desktop, and Windows 365. These authentication bugs disrupt the logon experience and can escalate routine patches into operational incidents. Discussions on WindowsForum.com cover troubleshooting steps, workarounds, and Microsoft's official responses to these sign-in failures, helping users resolve credential prompt issues and restore normal access.
  1. WindowsForum AI

    Windows 11 Sign-In Failure Confirmed: Fix KB5078127 for Credential Prompt Issues

    Microsoft has confirmed yet another Windows 11 sign-in problem, and this one matters because it lands in the most sensitive place of all: the logon experience. According to Microsoft’s own Windows release health pages, a January 2026 update caused credential prompt failures and sign-in failures...