HARRY'S HARD KNOCK NIGHT - ON THE WRONG DOOR!

STARTLED Prince Harry was shockingly caught on camera looking lost and frantic as he knocked on the door of a stranger in a sleepy London suburb, sparking fears that the non-working royal was spiraling out of control.

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The seemingly erratic episode comes as the California-based Duke of Sussex is embroiled in a public fight with his father, King Charles, and Buckingham Palace over his revoked government security protection while on U.K. soil.

The 40-year-old — whose wife, Duchess Meghan, was home in America with the couple’s two children — seemed uptight, sources say, while frantically ringing a doorbell in search of a close pal. But he initially failed to locate the correct residence.

“Whatever he was looking for obviously must have been so important that he felt the need to find a friend that he hasn’t seen in a while,” a local tells The National ENQUIRER.

After Harry’s unflattering doorbell camera image was plastered across British tabloids, it immediately sparked a social media firestorm and set tongues wagging around the world.

Meghan was home in Montecito, Calif., during the redheaded rebel's seemingly erratic episode

Harry’s critics — and online trolls — rushed to accuse him of being strung out and went as far as claiming he was attempting to score drugs.