We have a SP2016 on-premise. It is installed on domain sharepoint.local. One-way trust is established to our company domain company.com. It works fine for last 1 year.

Recently we have rollback the VM snapshot to a week earlier for some troubleshooting. After we rolled back, every user of company.com cannot login. The login prompt is prompting forever until user press "cancel" and returned 401 UNAUTHORIZED page.

But all users of sharepoint.local can login without problem.

I never encountered this issue and not sure how to start our troubleshooting. Could you please advise?

P.S. before rollback we are performing some hardening procedure but no password prompt at that moment

  • What VM did you roll back, SharePoint, SQL, AD?? Mar 9, 2020 at 20:52
  • @JoshMcClanahan all of them are rollbacked, then rebooted once. Only the AD of Sharepoint.com is under our manage so company.com is untouched
    – Mark L
    Mar 9, 2020 at 23:17
  • We tried to validate the trust company.com on our AD server. It return "The secure channel (SC) reset on Active Directory Domain Controller \\AD.sharepoint.local of domain sharepoint.local to domain company.com failed with error: Access is denied."
    – Mark L
    Mar 10, 2020 at 2:22
  • But we established the same trust between our production farm with same account. The production farm's trust can be validated.
    – Mark L
    Mar 10, 2020 at 2:23

1 Answer 1


After re-established the trust (re-type the login/password to join domain) between SharePoint.local and Company.com it is fixed. The password is never changed. It seems a rollback of VM snapshot make domain controller think the password is invalid.

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