France's financial regulator, the Autorité des Marchés Financiers (AMF), has issued a stern warning to cryptocurrency firms operating in Europe. Companies must secure EU licenses by the end of June under the Markets in Crypto-Assets (MiCA) regime or face blacklisting and potential prosecution. The MiCA framework, designed to standardize digital asset regulations across the EU, requires firms to obtain national authorizations that can be "passported" across the 27-member bloc. AMF President Marie-Anne Barbat-Layani emphasized the urgency of finalizing license applications, stating that France will not hesitate to blacklist non-compliant firms and pursue enforcement actions. She also highlighted France's willingness to block the passporting of licenses from other EU states if their approval processes are deemed inadequate. This move comes amid concerns over inconsistent licensing speeds across member states and aims to ensure regulatory harmony within the EU.