WINDSOR have suffered a first away league defeat in three matches when losing 2-1 at Westfield on Saturday.
Ryan Marklew levelled the scores on 73 minutes and Max Blackmore secured all three points for Westfield three minutes from the final whistle.
Despite the defeat Windsor remain in 12th place in the Combined Counties Premier Division table ahead of a visit to Stag Meadow from AFC Hayes this Saturday (3pm).
Windsor turn their attention to the Combined Counties Premier Challenge Cup on Tuesday (7.45pm) and a semi-final tie away at Epsom & Ewell.
Maidenhead United made it a hat-trick of wins in National League South when beating Welling United 3-0 at York Road on Saturday.
PHOTO: Windsor keeper Hugo Sobte catches the ball at Westfield.
The Magpies broke the deadlock on 24 minutes when Dean Inman headed home a Dave Tarpey corner.
The home team were well worth their second and got it from record-breaking Dave Tarpey four minutes after the first goal. Sean Marks flicked the ball through to his strike partner who made no mistake with his left foot.
Maidenhead got their third goal in the second minute of time added on at the end of the first half. Welling failed to clear and Remy Clerima picked out James Mulley with a header before the winger volleyed low into the net.
The Magpies remain top of the table by a single point with Oxford City the visitors to York Road on Tuesday (7.45pm).
Grab a copy of the Observer this Friday for match photos and reaction.