[Litecoin Cash] Unable to activate LCC-segwit, all servers errored

[czka]

To Reproduce

1. Download and extract the latest Linux tarball (as of writing: https://github.com/GLEECBTC/gleec-wallet/releases/download/0.9.3-sunset/komodo-wallet-linux-28f12cf36.tar.gz).
2. Run the wallet binary on Linux.
3. Create/open a wallet, go to Swap, pick Litecoin Cash SegWit, observe error:

Unable to activate LCC-segwit: Exception: GeneralErrorResponse: {"mmrpc":"2.0","error":"Transport error: utxo_common:3409] client:985] JsonRpcError { client_info: \"coin: LCC-segwit\", request: JsonRpcRequest { jsonrpc: \"2.0\", id: 0, method: \"blockchain.headers.subscribe\", params: [] }, error: Internal(\"All servers errored: [(electrum-lcc.cascoin.net:50002, Transport(\\\"Failed to establish connection: Temporary(\\\\\\\"Couldn't connect to the electrum server: Os { code: 111, kind: ConnectionRefused, message: \\\\\\\\\\\\\\\"Connection refused\\\\\\\\\\\\\\\" }\\\\\\\")\\\")), (lcc-ex-one.ewmci.online:50002, Transport(\\\"Failed to establish connection: Temporary(\\\\\\\"Couldn't connect to the electrum server: Custom { kind: InvalidData, error: InvalidCertificate(Expired) }\\\\\\\")\\\"))]\") }","error_path":"lib.init_standalone_coin.common_impl","error_type":"Transport","error_data":"utxo_common:3409] client:985] JsonRpcError { client_info: \"coin: LCC-segwit\", request: JsonRpcRequest { jsonrpc: \"2.0\", id: 0, method: \"blockchain.headers.subscribe\", params: [] }, error: Internal(\"All servers errored: [(electrum-lcc.cascoin.net:50002, Transport(\\\"Failed to establish connection: Temporary(\\\\\\\"Couldn't connect to the electrum server: Os { code: 111, kind: ConnectionRefused, message: \\\\\\\\\\\\\\\"Connection refused\\\\\\\\\\\\\\\" }\\\\\\\")\\\")), (lcc-ex-one.ewmci.online:50002, Transport(\\\"Failed to establish connection: Temporary(\\\\\\\"Couldn't connect to the electrum server: Custom { kind: InvalidData, error: InvalidCertificate(Expired) }\\\\\\\")\\\"))]\") }","error_trace":"lib:107] init_standalone_coin:221] common_impl:44]","object":{"mmrpc":"2.0","result":{"status":"Error","details":{"error":"Transport error: utxo_common:3409] client:985] JsonRpcError { client_info: \"coin: LCC-segwit\", request: JsonRpcRequest { jsonrpc: \"2.0\", id: 0, method: \"blockchain.headers.subscribe\", params: [] }, error: Internal(\"All servers errored: [(electrum-lcc.cascoin.net:50002, Transport(\\\"Failed to establish connection: Temporary(\\\\\\\"Couldn't connect to the electrum server: Os { code: 111, kind: ConnectionRefused, message: \\\\\\\\\\\\\\\"Connection refused\\\\\\\\\\\\\\\" }\\\\\\\")\\\")), (lcc-ex-one.ewmci.online:50002, Transport(\\\"Failed to establish connection: Temporary(\\\\\\\"Couldn't connect to the electrum server: Custom { kind: InvalidData, error: InvalidCertificate(Expired) }\\\\\\\")\\\"))]\") }","error_path":"lib.init_standalone_coin.common_impl","error_trace":"lib:107] init_standalone_coin:221] common_impl:44]","error_type":"Transport","error_data":"utxo_common:3409] client:985] JsonRpcError { client_info: \"coin: LCC-segwit\", request: JsonRpcRequest { jsonrpc: \"2.0\", id: 0, method: \"blockchain.headers.subscribe\", params: [] }, error: Internal(\"All servers errored: [(electrum-lcc.cascoin.net:50002, Transport(\\\"Failed to establish connection: Temporary(\\\\\\\"Couldn't connect to the electrum server: Os { code: 111, kind: ConnectionRefused, message: \\\\\\\\\\\\\\\"Connection refused\\\\\\\\\\\\\\\" }\\\\\\\")\\\")), (lcc-ex-one.ewmci.online:50002, Transport(\\\"Failed to establish connection: Temporary(\\\\\\\"Couldn't connect to the electrum server: Custom { kind: InvalidData, error: InvalidCertificate(Expired) }\\\\\\\")\\\"))]\") }"}},"id":null}}

Expected behavior
I was able to use LCC with Komodo Wallet without issues ~2 months ago a couple times. Last time was Dec 14 2025.

Found in
The latest Linux tarball (as of writing: https://github.com/GLEECBTC/gleec-wallet/releases/download/0.9.3-sunset/komodo-wallet-linux-28f12cf36.tar.gz).

Environment:

• Platform: Desktop
• Device: PC
• OS: Arch Linux

Additional context
Another problem is that my LCC wallet balance is not showing in the app, although the respective LCC address has balance on the blockchain according to explorers, e.g. https://chainz.cryptoid.info/lcc/.

[cipig]

it's in the error message: InvalidCertificate(Expired)
the SSL cert of this electrum servers has expired and kdf does not like that
i can use LCC, because i added "disable_cert_verification": true to the config of LCC electrums in my own coins repo, then expired certs can be used
it would be nice if kdf could use self-signed certs, then people can make certs that never expire and the problem is gone forever... or we add "disable_cert_verification": true to all SSL electrums... idk though if that works for WSS too

[cipig]

i can also setup our own electrums for LCC
management should decide though if we want to do this and how to proceed:

• which coins should i add?
• do we want to demand payment from those coins?

[czka]

FWIW, as of writing the problem is gone. What was the fix?

[cipig]

the "fix" was to renew the SSL certificates, by those who run those LCC electrum servers: https://github.com/GLEECBTC/coins/blob/master/electrums/LCC

[czka]

the "fix" was to renew the SSL certificates, by those who run those LCC electrum servers: https://github.com/GLEECBTC/coins/blob/master/electrums/LCC

Thanks, do we call it done then? Or are we waiting for kdf start using self-signed certs for a proper fix?

[cipig]

there is already this issue open in kdf repo GLEECBTC/komodo-defi-framework#2368