After some period of time, or event, IntelliJ Idea can't download updates, gets Status 403
Answered
I am not sure what the event is, but this is the second time that Idea has stopped downloading updates. It is able to check for and display the fact that updates are available, but it ends up failing to download.
We are behind a proxy, but this doesn't appear to be the (full) problem. I have a Linux dev box where this has not occurred, but it is happened a second time on my Windows box.
Uninstalling & reinstalling didn't fix the problem, nor did upgrading manually.
The only way I resolved this before was by deleting my %HOME%\.IntelliJIdea2017.1 folder. At this point, after coming up, I was able to successfully download updates.
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Try disabling http://i.imgur.com/p037pW2.png as a workaround.
That did the trick. Is there a bug opened against this already that I can track? I did some searching, but didn't come up with the right search terms to locate information about it.
There is no bug, the problem seems to be with how your proxy processes HTTPS requests (it probably blocks them or tries to replace SSL certificate to decrypt the traffic which may cause issues, or it may even try to scan the files coming through and block some of them).
I certainly could understand that, however, I'm not sure why there would be a difference between two platforms (working in Linux, same proxy configuration), or why clearing that folder would also fix this.
I'm afraid, that would be hard to know without capturing and comparing the network dumps (via WireShark or similar tools).
Proxy detection may work differently on your systems and it's possible that different proxy or options are used for the download.
Or it could be a temporary issue with the download mirrors, since it takes some time for the patch files to be ready on all the mirrors, IDE may be trying to access a different mirror when using HTTPS protocol and the patch is not yet available on that mirror. If it's the case, just wait for several hours and try again.
This may also explain why it works for Linux at the same time (linux patch was synchronized faster between the download mirrors or a different mirror was used to get it).
Possibly. I'll continue to use the workaround.
Additional information:
It gives me all the signs of something happening in my local installation (be it a setting, or some plugin). I don't have the same plugins across my Windows/Linux Idea instances.
Mark
Yes, it's weird. If it happens again, please file a ticket to support (https://intellij-support.jetbrains.com/hc/requests/new) with idea.log (https://intellij-support.jetbrains.com/hc/articles/207241085) and a wireshark dump for IntelliJ IDEA process. Thank you.