Bury goalkeeper Darren Randolph produced a string of fine saves as Hereford were held to a goalless draw at Edgar Street.
The result meant the Bulls missed the chance to move within three points of leaders MK Dons and second-placed Peterborough at the top of Coca-Cola League Two.
Randolph saved from Ben Smith before the break, then denied Gary Hooper after his first effort had hit the bar.
David Buchanan had to make a goalline clearance, before Randolph kept out Theo Robinson's fierce shot - and he saved another effort from Toumani Diagouraga.
Graham Turner's side remain in the third automatic promotion place - two points ahead of Darlington, who slipped to a 2-1 defeat at Chester.
Paul Rutherford (6) and Richie Partridge (36) gave Chester the lead at the Deva Stadium - and although Stephen Foster pulled a goal back in the 86th minute, the Quakers were unable to find an equaliser.
Stefan Oakes scored the only goal of the game as Wycombe consolidated their place in the play-offs with a 1-0 win over Morecambe.
Chesterfield's bid for a play-off place was strengthened after they pulled four points clear of eighth-placed Rochdale following a 4-2 home win over Accrington.
Stanley took a 2-0 lead after Andrew Procter scored in the 23rd minute and converted a 31st-minute penalty.
But the Spireites hit back with goals from Derek Niven (31), Jamie Lowry (59) and Jamie Ward (85) as well as a 59th-minute own-goal from Mark Roberts to take the points.
Michael Johnson (28) gave Notts County a 1-0 win over Rochdale, which eased their relegation worries - while two goals from Ricky Shakes (31, 81) saw Brentford heap more misery on bottom side Wrexham with a 2-0 win.
Second-bottom Mansfield suffered a 2-1 home defeat at the hands of Grimsby thanks to a 74th-minute winner from Danny Boshell, after Nathan Arnold (49) had levelled Peter Till's (32) opener.
Rotherham were held to a 1-1 draw by a Bradford side reduced to 10 men, to make their hopes of reaching the play-offs unlikely following their 10-point deduction.
Chris O'Grady (65) equalised Joe Colbeck's (48) opening goal, and Omar Daley was shown a straight red in the 71st minute.
Ben Wright (76, 81) scored twice for Lincoln but saw his side thrashed by 5-2 by Barnet at Underhill. Adam Birchall (28, 46), Anthony Thomas (44), Max Porter (63) and a 38th-minute penalty from Albert Adomah sealed the win for the Bees.
Dagenham striker Paul Benson (70) came from the bench to cancel out Andrew Cooke's 34th-minute opener and give his side a 1-1 draw at home to Shrewsbury.
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