Encryption options not supported

[alpha]

"The website [http://hq.postman.i2p/] was not reachable, because it uses encryption options that are not supported by your I2P or Java version."

How do I fix this?

[lgillis]

alpha: LibreWolf. Easy and secure by default.

Does LibreWolf use HTTPS-Only mode? »Yes, and you won't need any extension for that. HTTP can still be allowed for certain sites.«

[alpha]

HTTPS only mode is disabled. I think the problem is related to the issue described in the link below.

http://i2pforum.i2p/viewtopic.php?t=1216

[zzz]

The linked issue is about SAM, your issue is with i2ptunnel (hidden services manager), but same concept.

For some reason your HTTP client proxy is ElGamal-2048 only, and hq.postman.i2p is ECIES-X25519-only.

Go to hidden services manager, stop your HTTP proxy client tunnel, edit it, change the Encryption type to ECIES-X25519 + ElGamal-2048, save, and restart the tunnel.

Everybody got auto-migrated years ago to enable ECIES-X25519 in their tunnels, either it didn't happen for you for unknown reasons, or you changed it, or you're on an ancient version.

[lgillis]

Is the error code displayed in the browser "403 Incompatible Encryption Options" (line 1 in enc-header.ht)?
Isn't the title/heading "Website Unreachable" and the following description misleading, after all the site must be "reachable" in order to determine the incompatibility?

[alpha]

Thanks. Fixed after changing encryption type to ECIES-X25519 by setting leaseSetEncType=4 after shutting down the router. This setting could not be changed through the GUI with the service shut down unless routerconsole.advanced=true.