I just install unity from the unity official site , and I want to watch my unity version , so I went to help->check for updates , but then I found a mistake , I can’t access update server, I didn’t watch my unity version , I watched it’s connection to the update server failed .why? I already tried to completely uninstall unity , and then reinstall it , but it didn’t work , I use the free version . I can access the asset store .
I noticed I 'm using proxy server to surf in internet , so I tried to add System Variable , HTTP_proxy , HTTPS_proxy , make sure unity can also use the proxy , but problem is still here , nothing change.
Same here. I’ve had this problem for a while.
Currently failing with: Unity 2018.1.5f1.
Other users mentioned that this used to be a recurring problem in Asia. I’m in Europe and I’ve also tried to VPN into another region, to no avail.
The last time I updated by downloading and running the installer.
UPDATE: this seems to be caused by an expired TLS certificate: Unity Issue Tracker - "Connection to the Update server failed" error appears when trying to update unity editor via Check for Updates in the main menu
Same problem here.
I have the same problem on two PCs.
They have these versions of Unity 2018.1.6f1 and 2017.3.0f3
The 2017 is the one I need to update.
Same here
I just installed Unity 2018 even though my Unity 2017 said I had he latest version. I installed 2018.1.61f yesterday and now when I check to see if I have the latest version, it repeatedly tells me that I cannot connect to the update server!
Just got this message.
I think the update server is working now. I hope you guys got this message too.
hi , guys ,My problem already solved when I used the new version. 
I think the new version may have not the problem , but I also do another thing , let me talk , previously , I use shadowsocks+ssr ,so I download proxifier to achieve real global internet access ,then I open unity , I found unity can access the update server ,though it say my version is the latest version , and I also found a error because of proxifier , so I uninstall proxifier , then I reopen unity ,error is gone and I also can access the update server , but I can’t sure the update server is real work because I use the latest , until today I get this message . so I hope you guys can use the new version to solve the problem , If not , you can try to use proxifier , if you get error , just uninstall it , may be your unity can work like mine
I have the same problem. I started using unity after a long time so I wanted to check if there were any updates while I was gone and that same message popped up. Cant figure out how to solve it,I have the same problem. I cant figure out a way to see if my unity is up to date or not
I just had the same problem trying to update from 2017.3.1 to 4.1
I also have the same problem, I’m using Unity 2017.3.1f1 version. 