After what appears to be a desktop update to 2.1.1, my android devices can no longer connect to the windows PC hosting syncthing.
Both the windows device and android device can ping each other and there are no firewall blocks. In troubleshooting this, I explicitly permitted syncthing ports for transfer and discovery. I also tried static IP definition, uninstalled the android app syncthing-fork and tried basicsync as well, both resulted in the same issue (no connection, no signs of life when adding a device based on ID)
LAN to LAN connections regardless of subnet on my local network are permitted explicitly (noted that the devices can both ping each other without issue)
Given the steps I have tried so far, I am out of other things to try short of uninstalling and reinstalling on windows. Is there anything else to try?
Logs below:
Windows Log:
2026-06-12 11:21:54 INF Using discovery mechanism (identity=“global discovery server https://discovery-lookup.syncthing.net/v2/?noannounce” log.pkg=discover)
2026-06-12 11:21:54 INF Using discovery mechanism (identity=“global discovery server https://discovery-announce-v4.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:21:54 INF Using discovery mechanism (identity=“global discovery server https://discovery-announce-v6.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:21:54 INF Using discovery mechanism (identity=“IPv4 local broadcast discovery on port 21027” log.pkg=discover)
2026-06-12 11:21:54 INF Using discovery mechanism (identity=“IPv6 local multicast discovery on address [ff12::8384]:21027” log.pkg=discover)
2026-06-12 11:21:54 INF Relay listener starting (id=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:21:54 INF TCP listener starting (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:21:54 INF QUIC listener starting (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:21:54 INF Creating new HTTPS certificate (log.pkg=api)
2026-06-12 11:21:54 INF GUI and API listening (address=127.0.0.1:8384 log.pkg=api)
2026-06-12 11:21:54 INF Access the GUI via the following URL: https://127.0.0.1:8384/ (log.pkg=api)
2026-06-12 11:21:54 INF Loaded configuration (name=“Pixel 6 Pro” log.pkg=syncthing)
2026-06-12 11:21:54 INF Pausing device (device=X3F4QB3 log.pkg=model)
2026-06-12 11:21:54 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-announce-v6.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:21:54 INF Stopped using discovery mechanism (identity=“IPv4 local broadcast discovery on port 21027” log.pkg=discover)
2026-06-12 11:21:54 INF Stopped using discovery mechanism (identity=“IPv6 local multicast discovery on address [ff12::8384]:21027” log.pkg=discover)
2026-06-12 11:21:54 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-lookup.syncthing.net/v2/?noannounce” log.pkg=discover)
2026-06-12 11:21:54 WRN Skipping listener due to global pause (uri=tcp://0.0.0.0:22000 log.pkg=connections)
2026-06-12 11:21:54 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-announce-v4.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:21:54 WRN Skipping listener due to global pause (uri=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:21:54 WRN Skipping listener due to global pause (uri=quic://0.0.0.0:22000 log.pkg=connections)
2026-06-12 11:21:54 INF QUIC listener shutting down (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:21:54 INF Relay listener shutting down (id=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:21:54 INF Measured hashing performance (perf=“205.70 MB/s” log.pkg=syncthing)
2026-06-12 11:21:55 INF TCP listener shutting down (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:22:24 INF Detected NAT services (count=0 log.pkg=nat)
2026-06-12 11:23:14 INF Resuming device (device=X3F4QB3 log.pkg=model)
2026-06-12 11:23:14 INF Relay listener starting (id=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:23:14 INF Using discovery mechanism (identity=“global discovery server https://discovery-lookup.syncthing.net/v2/?noannounce” log.pkg=discover)
2026-06-12 11:23:14 INF Using discovery mechanism (identity=“global discovery server https://discovery-announce-v4.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:23:14 INF Using discovery mechanism (identity=“global discovery server https://discovery-announce-v6.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:23:14 INF Using discovery mechanism (identity=“IPv4 local broadcast discovery on port 21027” log.pkg=discover)
2026-06-12 11:23:14 INF Using discovery mechanism (identity=“IPv6 local multicast discovery on address [ff12::8384]:21027” log.pkg=discover)
2026-06-12 11:23:14 INF QUIC listener starting (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:23:14 INF TCP listener starting (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:23:14 INF Pausing device (device=X3F4QB3 log.pkg=model)
2026-06-12 11:23:14 INF Stopped using discovery mechanism (identity=“IPv4 local broadcast discovery on port 21027” log.pkg=discover)
2026-06-12 11:23:14 WRN Skipping listener due to global pause (uri=tcp://0.0.0.0:22000 log.pkg=connections)
2026-06-12 11:23:14 WRN Skipping listener due to global pause (uri=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:23:14 WRN Skipping listener due to global pause (uri=quic://0.0.0.0:22000 log.pkg=connections)
2026-06-12 11:23:14 INF Stopped using discovery mechanism (identity=“IPv6 local multicast discovery on address [ff12::8384]:21027” log.pkg=discover)
2026-06-12 11:23:14 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-lookup.syncthing.net/v2/?noannounce” log.pkg=discover)
2026-06-12 11:23:14 INF QUIC listener shutting down (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:23:14 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-announce-v4.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:23:14 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-announce-v6.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:23:14 INF Relay listener shutting down (id=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:23:15 INF TCP listener shutting down (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:24:53 INF Exiting (log.pkg=syncthing)
2026-06-12 11:24:53 INF Clearing proxy settings
2026-06-12 11:24:53 INF Clearing no_proxy settings
2026-06-12 11:24:53 INF Calculated our device ID (device=K273RDO-2RPUKCY-BSVTQ7G-DLO5MTU-NUHYA44-UYUINLG-XKPROCS-KHWW4QY log.pkg=syncthing)
2026-06-12 11:24:53 INF Overall rate limit in use (send=“is unlimited” recv=“is unlimited” log.pkg=connections)
2026-06-12 11:24:53 INF Relay listener starting (id=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:24:53 INF Using discovery mechanism (identity=“global discovery server https://discovery-lookup.syncthing.net/v2/?noannounce” log.pkg=discover)
2026-06-12 11:24:53 INF Using discovery mechanism (identity=“global discovery server https://discovery-announce-v4.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:24:53 INF Using discovery mechanism (identity=“global discovery server https://discovery-announce-v6.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:24:53 INF Using discovery mechanism (identity=“IPv4 local broadcast discovery on port 21027” log.pkg=discover)
2026-06-12 11:24:53 INF Using discovery mechanism (identity=“IPv6 local multicast discovery on address [ff12::8384]:21027” log.pkg=discover)
2026-06-12 11:24:53 INF TCP listener starting (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:24:53 INF QUIC listener starting (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:24:53 INF Creating new HTTPS certificate (log.pkg=api)
2026-06-12 11:24:53 INF GUI and API listening (address=127.0.0.1:8384 log.pkg=api)
2026-06-12 11:24:53 INF Access the GUI via the following URL: https://127.0.0.1:8384/ (log.pkg=api)
2026-06-12 11:24:53 INF Loaded configuration (name=“Pixel 6 Pro” log.pkg=syncthing)
2026-06-12 11:24:53 INF Loaded peer device configuration (device=2BIIGT6 name=oldboi address=“[dynamic]” log.pkg=syncthing)
2026-06-12 11:24:53 WRN Skipping listener due to global pause (uri=tcp://0.0.0.0:22000 log.pkg=connections)
2026-06-12 11:24:53 INF Stopped using discovery mechanism (identity=“IPv4 local broadcast discovery on port 21027” log.pkg=discover)
2026-06-12 11:24:53 WRN Skipping listener due to global pause (uri=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:24:53 WRN Skipping listener due to global pause (uri=quic://0.0.0.0:22000 log.pkg=connections)
2026-06-12 11:24:53 INF Stopped using discovery mechanism (identity=“IPv6 local multicast discovery on address [ff12::8384]:21027” log.pkg=discover)
2026-06-12 11:24:53 INF Relay listener shutting down (id=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:24:53 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-lookup.syncthing.net/v2/?noannounce” log.pkg=discover)
2026-06-12 11:24:53 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-announce-v4.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:24:53 INF QUIC listener shutting down (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:24:53 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-announce-v6.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:24:53 INF Ready to synchronize (folder.label=KakaotalkPhotos folder.id=065j5-302aq folder.type=sendonly log.pkg=model)
2026-06-12 11:24:53 INF Ready to synchronize (folder.label=KakaotalkVideos folder.id=a2yy3-p7cz3 folder.type=sendonly log.pkg=model)
2026-06-12 11:24:53 INF Ready to synchronize (folder.label=Pixel6Photos folder.id=ts5n5-6d4rg folder.type=sendonly log.pkg=model)
2026-06-12 11:24:53 INF Pausing device (device=K273RDO log.pkg=model)
2026-06-12 11:24:53 INF Pausing device (device=2BIIGT6 log.pkg=model)
2026-06-12 11:24:54 INF Measured hashing performance (perf=“165.90 MB/s” log.pkg=syncthing)
2026-06-12 11:24:54 INF TCP listener shutting down (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:24:56 INF Completed initial scan (folder.label=KakaotalkVideos folder.id=a2yy3-p7cz3 folder.type=sendonly log.pkg=model)
2026-06-12 11:24:56 INF Completed initial scan (folder.label=KakaotalkPhotos folder.id=065j5-302aq folder.type=sendonly log.pkg=model)
2026-06-12 11:25:02 INF Using discovery mechanism (identity=“global discovery server https://discovery-lookup.syncthing.net/v2/?noannounce” log.pkg=discover)
2026-06-12 11:25:02 INF Using discovery mechanism (identity=“global discovery server https://discovery-announce-v4.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:25:02 INF Using discovery mechanism (identity=“global discovery server https://discovery-announce-v6.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:25:02 INF Using discovery mechanism (identity=“IPv4 local broadcast discovery on port 21027” log.pkg=discover)
2026-06-12 11:25:02 INF Using discovery mechanism (identity=“IPv6 local multicast discovery on address [ff12::8384]:21027” log.pkg=discover)
2026-06-12 11:25:02 INF Resuming device (device=K273RDO log.pkg=model)
2026-06-12 11:25:02 INF Resuming device (device=2BIIGT6 log.pkg=model)
2026-06-12 11:25:02 INF Relay listener starting (id=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:25:02 INF TCP listener starting (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:25:02 INF QUIC listener starting (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:25:02 WRN Skipping listener due to global pause (uri=tcp://0.0.0.0:22000 log.pkg=connections)
2026-06-12 11:25:02 WRN Skipping listener due to global pause (uri=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:25:02 WRN Skipping listener due to global pause (uri=quic://0.0.0.0:22000 log.pkg=connections)
2026-06-12 11:25:02 INF Pausing device (device=K273RDO log.pkg=model)
2026-06-12 11:25:02 INF Pausing device (device=2BIIGT6 log.pkg=model)
2026-06-12 11:25:02 INF Relay listener shutting down (id=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:25:02 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-announce-v6.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:25:02 INF Stopped using discovery mechanism (identity=“IPv4 local broadcast discovery on port 21027” log.pkg=discover)
2026-06-12 11:25:02 INF Stopped using discovery mechanism (identity=“IPv6 local multicast discovery on address [ff12::8384]:21027” log.pkg=discover)
2026-06-12 11:25:02 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-lookup.syncthing.net/v2/?noannounce” log.pkg=discover)
2026-06-12 11:25:02 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-announce-v4.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:25:02 INF QUIC listener shutting down (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:25:03 INF TCP listener shutting down (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:25:23 INF Detected NAT services (count=0 log.pkg=nat)
2026-06-12 11:25:48 INF Using discovery mechanism (identity=“global discovery server https://discovery-lookup.syncthing.net/v2/?noannounce” log.pkg=discover)
2026-06-12 11:25:48 INF Relay listener starting (id=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:25:48 INF Using discovery mechanism (identity=“global discovery server https://discovery-announce-v4.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:25:48 INF Using discovery mechanism (identity=“global discovery server https://discovery-announce-v6.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:25:48 INF Using discovery mechanism (identity=“IPv4 local broadcast discovery on port 21027” log.pkg=discover)
2026-06-12 11:25:48 INF Using discovery mechanism (identity=“IPv6 local multicast discovery on address [ff12::8384]:21027” log.pkg=discover)
2026-06-12 11:25:48 INF TCP listener starting (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:25:48 INF QUIC listener starting (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:25:48 INF Ready to synchronize (folder.label=KakaotalkPhotos folder.id=065j5-302aq folder.type=sendonly log.pkg=model)
2026-06-12 11:25:48 INF Restarted folder (folder.label=KakaotalkPhotos folder.id=065j5-302aq folder.type=sendonly log.pkg=model)
2026-06-12 11:25:48 INF Ready to synchronize (folder.label=KakaotalkVideos folder.id=a2yy3-p7cz3 folder.type=sendonly log.pkg=model)
2026-06-12 11:25:48 INF Restarted folder (folder.label=KakaotalkVideos folder.id=a2yy3-p7cz3 folder.type=sendonly log.pkg=model)
2026-06-12 11:25:49 INF Completed initial scan (folder.label=KakaotalkVideos folder.id=a2yy3-p7cz3 folder.type=sendonly log.pkg=model)
2026-06-12 11:25:49 INF Completed initial scan (folder.label=KakaotalkPhotos folder.id=065j5-302aq folder.type=sendonly log.pkg=model)
2026-06-12 11:25:49 INF Completed initial scan (folder.label=Pixel6Photos folder.id=ts5n5-6d4rg folder.type=sendonly log.pkg=model)
2026-06-12 11:25:49 INF Ready to synchronize (folder.label=Pixel6Photos folder.id=ts5n5-6d4rg folder.type=sendonly log.pkg=model)
2026-06-12 11:25:49 INF Restarted folder (folder.label=Pixel6Photos folder.id=ts5n5-6d4rg folder.type=sendonly log.pkg=model)
2026-06-12 11:25:49 INF Resuming device (device=K273RDO log.pkg=model)
2026-06-12 11:25:49 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-announce-v6.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:25:49 INF Stopped using discovery mechanism (identity=“IPv4 local broadcast discovery on port 21027” log.pkg=discover)
2026-06-12 11:25:49 INF Pausing device (device=K273RDO log.pkg=model)
2026-06-12 11:25:49 INF Stopped using discovery mechanism (identity=“IPv6 local multicast discovery on address [ff12::8384]:21027” log.pkg=discover)
2026-06-12 11:25:49 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-lookup.syncthing.net/v2/?noannounce” log.pkg=discover)
2026-06-12 11:25:49 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-announce-v4.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:25:49 WRN Skipping listener due to global pause (uri=tcp://0.0.0.0:22000 log.pkg=connections)
2026-06-12 11:25:49 WRN Skipping listener due to global pause (uri=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:25:49 WRN Skipping listener due to global pause (uri=quic://0.0.0.0:22000 log.pkg=connections)
2026-06-12 11:25:49 INF QUIC listener shutting down (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:25:49 INF Relay listener shutting down (id=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:25:49 INF TCP listener shutting down (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:26:14 INF Resuming device (device=K273RDO log.pkg=model)
2026-06-12 11:26:14 INF Using discovery mechanism (identity=“global discovery server https://discovery-lookup.syncthing.net/v2/?noannounce” log.pkg=discover)
2026-06-12 11:26:14 INF Using discovery mechanism (identity=“global discovery server https://discovery-announce-v4.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:26:14 INF Using discovery mechanism (identity=“global discovery server https://discovery-announce-v6.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:26:14 INF Using discovery mechanism (identity=“IPv4 local broadcast discovery on port 21027” log.pkg=discover)
2026-06-12 11:26:14 INF Using discovery mechanism (identity=“IPv6 local multicast discovery on address [ff12::8384]:21027” log.pkg=discover)
2026-06-12 11:26:14 INF Relay listener starting (id=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:26:14 INF TCP listener starting (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:26:14 INF QUIC listener starting (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:26:14 INF Pausing device (device=2BIIGT6 log.pkg=model)
2026-06-12 11:26:14 INF Pausing device (device=K273RDO log.pkg=model)
2026-06-12 11:26:14 WRN Skipping listener due to global pause (uri=tcp://0.0.0.0:22000 log.pkg=connections)
2026-06-12 11:26:14 WRN Skipping listener due to global pause (uri=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:26:14 WRN Skipping listener due to global pause (uri=quic://0.0.0.0:22000 log.pkg=connections)
2026-06-12 11:26:14 INF Relay listener shutting down (id=dynamic+https://relays.syncthing.net/endpoint log.pkg=connections)
2026-06-12 11:26:14 INF QUIC listener shutting down (address=“[::]:22000” log.pkg=connections)
2026-06-12 11:26:14 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-lookup.syncthing.net/v2/?noannounce” log.pkg=discover)
2026-06-12 11:26:14 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-announce-v4.syncthing.net/v2/?nolookup” log.pkg=discover)
2026-06-12 11:26:14 INF Stopped using discovery mechanism (identity=“global discovery server https://discovery-announce-v6.syncthing.net/v2/?nolookup” l