Right
ā āgetting it backā just means dragging usage back under the 300 GB line; thereā''s no switch to raise the cap on a trial tenant, sadly. What actually freed mine, in order of impact:
Killed the retention / Purview policy ā that empties the hidden Preservation Hold Library, which was quietly hoarding a copy of every deleted file (almost always the #1 hog).
Emptied the second-stage recycle bin + trimmed version history (old versions get billed, adds up fast).
Force-purged deleted usersāāā OneDrive ā they linger ~93 days and still count otherwise.
Heads up though: itā''s not instant ā pooled usage only recalculates every ~24ā48h, so the read-only lock lifted a day or two after I was back under the line, not right away ![]()
āāāāāāāāāāāāāāā
Just so weāāāre clear (the guideāāās storage section says this too): thereā''s no trick to push a trial tenant above 300 GB ā Microsoft killed that (10 GB/user, 300 GB pool, 0 GB add-on). So āstorage backā only ever means back under the cap. The real prize here is the software + 25 licenses, not the drive ![]()

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