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I have a problem with the window handles on two of my uPVC windows: the handles turn up and down but the little locks at the bottom of the windows do not move or click into place properly, therefore the windows don't close properly.

Would anyone be able to tell me what is wrong?

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Can we see a pic? Are the upper sashes totally in the full up position? Does the locking hardware on the sashes line up together? – shirlock homes Mar 24 '13 at 12:50

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