Syncthing-GTK: An existing Connection was forcibly closed by the remote host Error

[inusbaumpjm]

I'm receiving this error on the latest version. Can someone please help. Love the software however i need to resolve this issue. Many thanks!

[kozec]

Can you try starting syncthing (not syncthing-gtk) in terminal and starting syncthing-gtk only after syncthing?

It may show some error message explaining why it is closing connection.

[m-p-3]

Same issue here, what's weird is that the daemon is still accessible at http://127.0.0.1:8080/, and I don't see anything weird in the logs (anonymized the best I could). As soon as you close the error message, the daemon stops responding.

2019-12-31 21:10:08 My ID: XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX
2019-12-31 21:10:09 Single thread SHA256 performance is 1912 MB/s using minio/sha256-simd (472 MB/s using crypto/sha256).
2019-12-31 21:10:09 Hashing performance is 1152.11 MB/s
2019-12-31 21:10:09 Ready to synchronize "Smartphone" (xxxxx-xxxxx) (sendreceive)
2019-12-31 21:10:09 Overall send rate is unlimited, receive rate is unlimited
2019-12-31 21:10:09 Using discovery server https://discovery.syncthing.net/v2/?noannounce&id=XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX
2019-12-31 21:10:09 Using discovery server https://discovery-v4.syncthing.net/v2/?nolookup&id=XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX
2019-12-31 21:10:09 Using discovery server https://discovery-v6.syncthing.net/v2/?nolookup&id=XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX
2019-12-31 21:10:09 Relay listener (dynamic+https://relays.syncthing.net/endpoint) starting
2019-12-31 21:10:09 TCP listener ([::]:yyyyy) starting
2019-12-31 21:10:09 ...
2019-12-31 21:10:09 QUIC listener ([::]:yyyyy) starting
2019-12-31 21:10:10 GUI and API listening on 127.0.0.1:8080
2019-12-31 21:10:10 Access the GUI via the following URL: http://127.0.0.1:8080/
2019-12-31 21:10:10 My name is "Desktop"
2019-12-31 21:10:10 Device YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY is "Smartphone" at [dynamic]
2019-12-31 21:10:10 Established secure connection to YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY at xxxxx.xxx.xx.xxxxx:yyyyy-xx.xxx.xxx.xxx:yyyyy/tcp-client/TLS1.2-TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305
2019-12-31 21:10:10 Device YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY client is "syncthing v1.3.2" named "Smartphone" at xxx.xxx.xx.xxx:yyyyy-xx.xxx.xxx.x:yyyyy/tcp-client/TLS1.2-TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305
2019-12-31 21:10:11 Completed initial scan of sendreceive folder "Smartphone" (xxxxx-xxxxx)
2019-12-31 21:10:21 New NAT port mapping: external TCP address xx.xxx.xxx.xxx:yyyyy to local address 0.0.0.0:yyyyy.
2019-12-31 21:10:21 New NAT port mapping: external TCP address 0.0.0.0:yyyyy to local address 0.0.0.0:22000.
2019-12-31 21:10:21 Detected 2 NAT services
2019-12-31 21:10:29 quic://0.0.0.0:yyyyy detected NAT type: Port restricted NAT
2019-12-31 21:10:29 quic://0.0.0.0:yyyyy resolved external address quic://xx.xxx.xxx.xxx:yyyyy (via stun.syncthing.net:3478)
2019-12-31 21:10:45 Joined relay relay://xx.xxx.xxx.xx:yyy

Operating System: Windows 10 Pro v1909 (64-bit)