The Eagles are placed 19th on the English League table after losing 1-0 at Burnley on Sunday and failed to score in their four league matches under De Boer.
The former Liverpool and Fulham manager has been out of work since leaving the England job in July past year, following their shock Euro 2016 elimination against Iceland.
It remains to be seen if De Boer gets more time to transform the Eagles' fortunes.More news: Lascelles heads Newcastle victor at Swansea
His only victory as Palace manager came in the EFL Cup against Ipswich Town. Football teams lose games, it happens.
"I said before the match I had a good feeling that the squad have confidence, but they didn't start with that confidence, and maybe that is the result of the goal we conceded".
The 47-year-old former Ajax player and manager only took charge on June 26 with a three-year contract, but his first four Premier League games all ended in defeat.
He is expected to be in the dugout on Saturday lunchtime for Palace's next game, when they host fellow strugglers Southampton at Selhurst Park.