Hi, Sometimes occures "WARNING: Module rlm_sql became unblocked" in the "Received Accounting-Request" on the FR server logs and dont sent back the "Sent Accounting-Response" packet to the NAS. But when I checked the db. radacct records, the acct. "Interim-Update" record was inserted into the radacct table. But NAS sends the "Accounting-Request" packet again and again a duplicate error is logged because it has been entered into the db before. I don't observe any slowdown in db. and server load is also quite low. This creates unnecessary acct. traffic and causes radius server UP-DOWN on the NAS side then switch into secondary FR server. How can I solve this problem? FreeRADIUS Version 3.0.20 and db. PostgreSQL 12.8, db. server and radius server are on separate servers. Regards -- Can Paçacı