vivado报错common17-345

vivado使用：SYNTHESIS->Run Synthesis 时报错
[Common 17-345] A valid license was not found for feature ‘Synthesis’ and/or device ‘xc7vx485t’. Please run the Vivado License Manager for assistance in determiningwhich features and devices are licensed for your system. 报错 问题解决方案@TOC

此问题报错是由于license没有更新，导致以前的license过期不能使用。更换新的即可

参考【vivado运行时报错 license文件更新操作】