Failure to install any plugin

[Ryter 0]

Whenever I try to install any plugin, I first get the screen on emby that the plugin has been successfully installed, but in fact in the browser notifications it says that it has failed installation. And in fact after restarting the server the plugin does not appear. 
I have also uninstalled and reinstalled the server, but the error persists in the same way.

I attached the log.

Windows 4.7.14.0

embyserver.txt

 

but immediatly

When i

in the homescreen of settings  appears a lot of failures

 

 

 

 

 

 

 

[Luke 37118]

Hi, can you try rebooting your machine and see if you still have an issue? Thanks.

[Ryter 0]

11 minutes ago, Luke said:

Hi, can you try rebooting your machine and see if you still have an issue? Thanks.

Yes sure! I re-installed also emby server because It gaves me this errore.

I tried also to add a rule for firewall in/out

[Luke 37118]

Are you using a VPN?

[Ryter 0]

16 minutes ago, Luke said:

Are you using a VPN?

No nothing, i tried also using various internet provider. Same for DNS 

[Luke 37118]

OK well I can confirm that it appears something is blocking your connection but there's no way for me to determine why.