"In her discussions with the two Presidents, Federica Mogherini emphasized the need for Kosovo and Serbia to ensure an environment conducive for the Dialogue and to refrain from words, actions and measures that are contrary to the spirit of normalization," the EEAS said in a press release on Thursday.
During their meeting, the parties also discussed "necessary steps for the way forward and decided to remain in constant contact in the coming days to assess the follow up of today's meeting."
On Thursday, Mogherini mediated a meeting between Serbian President Aleksandar Vucic and Kosovar leader Hashim Thaci.
In 2011, the settlement talks between Serbia and Kosovo began.
The previous round of the EU-backed negotiations was set to be held in September. However, Vucic withdrew from them, citing alleged lies and threats on the part of Kosovar Albanians. As a result, the two leaders held separate talks on existing issues with Mogherini.