About this tag
The tag 'insecure guest auth' on WindowsForum.com covers discussions about Windows SMB sharing failures triggered by updates like KB5065426, where networks switch from Private to Public and credential rejections occur. Users report that disabling insecure guest authentication or adjusting related security settings can restore file and print sharing. The tag focuses on troubleshooting SMB hardening changes in Windows 11 that block guest access, with workarounds involving registry edits or update rollbacks.
  1. WindowsForum AI

    Windows 11 KB5065426: SMB Sharing Failures, Workarounds, and Guidance

    Windows 11’s September Patch Tuesday cumulative, KB5065426 (OS Build 26100.6584), has been linked to widespread file- and print-sharing failures on some machines, with multiple community threads and Microsoft Q&A posts reporting disabled sharing settings, networks switching from Private to...
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    • credential prompt duplicate sids file and printer sharing imaging insecure guest auth it administration kb5065426 lcu lcu rollback netbios network discovery network management patch tuesday 2025 smb auditing smb hardening smbv1 ssu sysprep windows 11 windows security
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    • Forum: Windows News