EF代码首先在数据库'master'中创建被拒绝的数据库权限

I used code first for create and update database. My update-database commands in package manager worked until yesterday. But today it is not working and has this error: CREATE DATABASE permission denied in database 'master'. I do not any changes on connection string and other config. So I try to Update-database to another project on my system and my windows and I can recreate and update this database without any problem. Can you help me for fix this error?I used code first for create and update databas