@safaGH i have a same problem. Above methods to help, don't work. i tried use terminal to ping next addresses: packages.unity.com download.packages.unity.com upm-cdn.unity.com (or upm-cdn-china.unitychina.cn for locations in China) It's work. When i login, in logs get next error: When i down my company connection and connect with wi-fi, i had a next error: Please help me to resolve this problem. I can't download any packs from asset store for Unity Editor. I'm used Unity Hub 2.1.3 Thanks.