Firefox last month continued a march toward ruin, falling twice its average loss over the past year and losing its place as the world’s second-most-used browser.

According to data posted today by analytics company Net Applications, Firefox’s share in March slumped to 7.2%, down four-tenths of a percentage point. It was the fifth month in the last six in which the browser shed users – and much more importantly – a record low since Firefox climbed out of obscurity to threaten Microsoft’s Internet Explorer (IE) 15 years ago.

This record was the second in a row for Firefox, after February’s debut below the 2016 slump that previously marked the browser’s trough. Two do not a dataset make, but if a legitimate trend develops with, say, another month or two of declines, Mozilla will be, to say the least, in deep trouble.

Notably, Firefox’s fall meant it ceded second place to Microsoft’s Edge. Although Mozilla’s browser had handed second place to Chrome in March 2014 as the latter climbed ahead in the race against the still-dominant IE, Firefox resumed the silver spot in December 2018 when Microsoft’s browser lost it for good.

Computerworld again has had to adjust its forecast based on the latest losses. A month ago, that prediction – based on Firefox’s 12-month average – signaled the browser would fall under 7% in June; now, that mark should be reached in the first few days of May. By year’s end, Firefox’s share could be as low as 5.6%.

Now No. 2, Edge

Microsoft’s browsers – IE and Edge – lost three-tenths of a percentage point in March to end at 13.5%.

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