The annual meeting, which is in only its second year, was already postponed this spring after a previous flare-up of violence between Israel and the Palestinians.
Moroccan Foreign Minister Nasser Bourita said he hoped the meeting could still go ahead at a later date when circumstances are more "favorable."
Last year's meeting brought together the Israeli foreign minister and the top diplomats of Bahrain, Egypt and the United Arab Emirates, as well as Morocco.
"There were efforts to arrange it during the summer. Unfortunately, there is a political context which could prevent this meeting from producing the results we had been hoping for," Bourita said.
Morocco normalized its relations with Israel in December 2020 as part of a deal that also saw the United States recognize its unilateral annexation of disputed Western Sahara.
The deal has faced domestic criticism as the Palestinian cause still commands widespread public support in the North African country.