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"I don't understand why the gateway's sealed itself -"
— Mention of this charm[src]

Blocked Barrier[2] was a charm (incantation unknown) that could be used to seal magical barriers and portals of the like used by witches and wizards to limit access to magical locations.[1]

History[]

On 1 September 1992, the house-elf Dobby used this charm to block the barrier to Platform Nine and Three-Quarters, therefore preventing Harry Potter and Ronald Weasley from using it, as part of his plot to try to save Harry from the opening of the Chamber of Secrets.[1]

Behind the scenes[]

Appearances[]

Notes and references[]

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