Operations | Monitoring | ITSM | DevOps | Cloud

What a SharePoint hub site is, the 2,000 hub limit, how to register one in the admin center, who can associate sites, and how to delete or archive a hub.

Why OneDrive stops syncing a SharePoint library: the 300,000-item limit, invalid names, 400-character paths, 250 GB files, read-only libraries and full storage.

How Microsoft's SharePoint file archive policy works (preview): New-SPOFileArchivePolicy, last-access rules, What-If mode, exclusions, reports and limits.

How to set up pay-as-you-go SharePoint storage in the Microsoft 365 admin center: prerequisites, billing policy steps, budgets and alerts, and disconnecting.

SharePoint sites read-only because storage is full: the exact messages, what Microsoft documents, why buying storage may not unlock it, and how to free space.

SharePoint and OneDrive pay-as-you-go billing (MC1330893, MC1477185) and the end of the OneDrive allowance above 5 TB (MC1465765): who is affected.

How to classify data in SharePoint Online: classifiers, labels, auto-labeling and on-demand scans, where each one stops, and how to reach archived content.

All 23 failure codes Purview reports when auto-labeling a SharePoint file fails: which retry on their own, which need action, and where to find the code.

Purview retention policies can now archive inactive SharePoint files into Microsoft 365 Archive. What MC1472601 and MC1325441 change, the Copilot indexing trade-off, and what to configure before the rollout reaches your tenant.

Why a Teams chat disappears or shows Unknown User after an employee's account is deleted, where the messages really are, the eDiscovery route, and how to keep leavers' chats.