Dowlnoad failed check internet connection ! ?? im connected

[theotakudemon]

I had the same issue so I uninstalled and now it won't reinstall. I've tried everything that has been suggested and nothing has worked. My brand new Cosmos is now literally useless because I can't get Viveport to install or work.

[Cracatoa]

I'm having this issue.  This is inexcusable.  There are no answers posted from HTC on how to fix this.  Several customers have given ideas, but none of them have worked for me.

[Morglin]

There is still not a proper fix out there...

Facing the same issue.
Have tried all kind of things in the following order (and a many combinations of them):
* Uninstalling previous vive software (most likely a mistake as it seems I have no way to restore it)
* Deleted files from the "\AppData\Local\Temp" folder
* Restarted computer multiple times
* Disabled firewall
* Disabled AntiVirus
* Tried with and without VPN
* Edited Firewall settings to allow through ports listed here - https://service.viveport.com/hc/en-us/articles/360037222491-I-am-getting-a-Connection-Failed-error-how-do-I-fix-this-
* Tried 2 different internet provider networks
... and I still get the "Download failed   -   Please check the network connection and try again" error message. 
Yet, when I check the ViveLauncher log files then all the apk files listed there (i.e "https://vr-hwdl.vive.com/assets.apk-FI-59423-v75ig8qkws1sgvf5-.apk") which this app probably tries to download, are accessible when I paste that URL to browser. How difficult would it be do modify the Launcher in a way that it actually can properly find the files it should?

Some lines from error log:
...

 Download file from URL.
[2021-10-06 18:43:36.848 +2 0x2CC INFO LOG] No best priority URL available.
[2021-10-06 18:43:36.926 +2 0xCB4 INFO LOG] <ERROR> ThreadEntryDownloadPackageBySection fail : com.htc.windows.oobe.software_install from https://vr-hwdl.vive.com/assets.apk-FI-85774-nr0t3l2ngxdshsab-.apk Error:SSL connect error(35)
[2021-10-06 18:43:37.051 +2 0x2CC INFO LOG] Section 0 file not found by thread 560
[2021-10-06 18:43:37.067 +2 0x22CC INFO LOG] <ERROR> ThreadEntryDownloadPackageBySection fail : com.htc.windows.oobe.software_install from https://vr-hwdl.vive.com/assets.apk-FI-85774-nr0t3l2ngxdshsab-.apk Error:Couldn't resolve host name(6)

...