"In January, the upward trend for Chrome halted and Chrome lost 0.17% share on the desktop. Internet Explorer gained 1.1% and Firefox dropped 1%, "the research firm said.
Chrome ended January with a 18.9% share, down from the previous month's 19.1%. The drop was Chrome's largest since Google launched the browser in September 2008.
Meanwhile, IE boosted its usage share by 1.1 percentage points to close January with a 53% share.
However, data released by measurement company StatCounter said that IE dropped by 1.2 points to end the month with 37.5%, while Chrome gained 1.1 points to account for 28.4% of all browsers in use.