3 thoughts on “Windows Updates on Domain Controllers cause Exchange login issues

  1. Hi Andrew. Was this a consistent authentication issue where it always happened for all users or was this an intermittent issue where it works for some and not others? Thanks.

    • In each of the 5 customers I worked with, it was persistent and happened every time immediately after applying the updates.

  2. Pingback: Windows Updates on Domain Controllers cause Exchange login issues | Troubleshooting Exchange – JC's Blog-O-Gibberish

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