Tech Guides

Practical answers to the problems that stop work. Every guide here was tested before it was published, and every claim in it cites where it came from.

Abstract illustration of a closed circular path with a single break in it, in cyan on dark navy. Microsoft Entra ID The MFA registration loop, and the credential that breaks it A Conditional Access policy that requires MFA can block the page where users register MFA. Here is how to get someone in today and stop it recurring. Abstract illustration of items queued at a narrow aperture that has not opened, in cyan on dark navy. Exchange Online Nothing is moving to the online archive, and the five conditions that stop it An archive policy that never runs is usually blocked by one of five documented conditions, including a size threshold and a label that cannot archive. Abstract illustration of an arrow deflected away from a closed boundary, in cyan on dark navy. Microsoft 365 Groups 550 5.7.193, and why outside senders cannot email your Microsoft 365 group External mail to a Microsoft 365 group bounces with 550 5.7.193 because groups reject unauthenticated senders by default. Here is the fix and a lookalike. Abstract illustration of nested folder shapes with one path blocked by a solid bar, in cyan on dark navy. OneDrive Known Folder Move silently does nothing, and the old policy that is usually why Known Folder Move fails silently when Windows Folder Redirection got there first. Here is the blocker, the migration path off it, and the rollout limits. Abstract illustration of a broken chain of connected nodes, in cyan on dark navy. Power Automate Your Power Automate flow turned itself off, and the deadline that decided when A flow nobody touched stops running because of an inactivity deadline set by the licence behind it. Here is the deadline, the warning, and what to check. Abstract illustration of three separate paths converging on one endpoint, in cyan on dark navy. Exchange Online A shared mailbox will not appear in Outlook, and which of the three causes you have A shared mailbox missing from Outlook has three separate causes with three different fixes. Here is how to tell them apart before you change anything. Abstract illustration of a padlock shape formed from separated geometric bars, in cyan on dark navy. SharePoint Locked for editing by another user, when there is no other user Three different SharePoint locks produce the same message and need different handling. Here is how to tell which one you have before forcing anything. Abstract illustration of two overlapping boundaries where the smaller one constrains the larger, in cyan on dark navy. SharePoint This link has been disabled, and the two settings that decide it A SharePoint sharing link that reports itself disabled is usually a site-level setting overriding a permissive tenant one. Here is which setting wins and why. Abstract illustration of a partially filled grid where several cells remain as empty outlines, in cyan on dark navy. SharePoint Documents that will not show up in SharePoint search, and the four reasons why A document search cannot find is usually not an indexing fault. Four causes, how to tell them apart, and why pressing reindex twice makes it slower. Abstract illustration of four stacked gates in a row with one closed, in cyan on dark navy. Microsoft Teams Teams guest access fails in four different places, and only one of them is in Teams Guest access in Teams depends on settings in Entra ID, Microsoft 365 Groups and SharePoint as well as Teams. Here is the order to check them in and why.
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