Blocked-Barrier

Blocked Barrier was a charm that could be used to seal magical barriers and portals of the like used by witches and wizards to limit access to magical locations. - (Flying To Hogwarts)
==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.
==Behind the scenes==
*It is unknown if this spell is unique to House-elves and their magic.
==Appearances==
* 
==Notes and references==
Category:Protective Real-Magic Spells
Category:Spells Of-UnKnown Incantation