Regular crashes as of 28th of January in Windows client #5275
Description
Describe the problem
Starting the 28th or 29th of January, I get regular crashes in the netbird client on Windows, all of which have the following stack trace (obtained from netbird.err):
goroutine 390 [running]:
github.com/netbirdio/netbird/client/internal/peer/ice.(*ThreadSafeAgent).Close(0xc000e7c0c0?)
/home/runner/work/netbird/netbird/client/internal/peer/ice/agent.go:37 +0x14
github.com/netbirdio/netbird/client/internal/peer.(*WorkerICE).OnNewOffer(0xc0001a4d20, 0xc00159cf80)
/home/runner/work/netbird/netbird/client/internal/peer/worker_ice.go:110 +0x277
github.com/netbirdio/netbird/client/internal/peer.(*Handshaker).Listen(0xc00044c6e0, {0x7ff6910f2200, 0xc0008830e0})
/home/runner/work/netbird/netbird/client/internal/peer/handshaker.go:111 +0x31c
github.com/netbirdio/netbird/client/internal/peer.(*Conn).Open.func1()
/home/runner/work/netbird/netbird/client/internal/peer/conn.go:193 +0x5b
created by github.com/netbirdio/netbird/client/internal/peer.(*Conn).Open in goroutine 218
/home/runner/work/netbird/netbird/client/internal/peer/conn.go:191 +0x9ac
ice ERROR: 2026/02/07 01:12:33 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:12:33 Failed to get candidate pairs stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:20:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:22:39 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:24:10 Failed to get candidate pairs stats: the agent is closed
ice ERROR: 2026/02/07 01:24:10 Failed to get selected candidate pair stats: the agent is closed
ice ERROR: 2026/02/07 01:30:29 Failed to get selected candidate pair stats: the agent is closed
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x0 pc=0x7ff69042e474]
The number of ice ERRORs displayed in the stack trace vary, from no errors, to this longer list.
To Reproduce
After I get back to my laptop after a long pause, the connection is down, and can't be reconnected because the service isn't running any longer. I have to start the netbird service again to get the connection back up.
Expected behavior
No crashes.
Are you using NetBird Cloud?
Self-hosted.
NetBird version
Latest, enforced by policy
Is any other VPN software installed?
No?
Debug output
To help us resolve the problem, please attach the following anonymized status output
Peers detail:
xxxxx-storage-server.anon-sRfFF.domain:
NetBird IP: 100.101.11.184
Public key: oxfGH4IPOShhRMBVXNkH1tKXO06HgTw3nhQW8S3Tixg=
Status: Connected
-- detail --
Connection type: P2P
ICE candidate (Local/Remote): host/host
ICE candidate endpoints (Local/Remote): fd3c:7d59:d487:0:f98b:d15c:336e:81bd:59999/100:::43690
Relay server address: rels://netbird.anon-EYzIQ.domain:443
Last connection update: 4 hours, 3 minutes ago
Last WireGuard handshake: 24 seconds ago
Transfer status (received/sent) 109.9 KiB/141.1 KiB
Quantum resistance: false
Networks: 10.1.0.5/32, 10.1.0.6/32, 10.1.1.0/24, 10.253.0.0/16, 10.253.0.0/27, 10.253.0.4/32, 10.253.4.3/32, 10.253.5.0/24
Latency: 21.7236ms
vpn-server-us.anon-sRfFF.domain:
NetBird IP: 100.101.13.59
Public key: C6uCkq5RGMyVrwCjKXMsTckWfEQVr8xsxmeg8KMhGHk=
Status: Connected
-- detail --
Connection type: P2P
ICE candidate (Local/Remote): host/host
ICE candidate endpoints (Local/Remote): 172.25.64.1:59999/198.51.100.0:51820
Relay server address: rels://netbird.anon-EYzIQ.domain:443
Last connection update: 4 hours, 4 minutes ago
Last WireGuard handshake: 4 seconds ago
Transfer status (received/sent) 10.6 KiB/39.0 KiB
Quantum resistance: false
Networks: 10.1.0.4/32
Latency: 150.5562ms
data.anon-sRfFF.domain:
NetBird IP: 100.101.16.167
Public key: s8jmBk9H9BVgeh2LIswRNQ4Kb/pFFyVQOcqngdBs/jU=
Status: Connected
-- detail --
Connection type: P2P
ICE candidate (Local/Remote): host/host
ICE candidate endpoints (Local/Remote): 100::1:59999/100::2:51820
Relay server address: rels://netbird.anon-EYzIQ.domain:443
Last connection update: 4 hours, 4 minutes ago
Last WireGuard handshake: 58 seconds ago
Transfer status (received/sent) 29.8 KiB/29.8 KiB
Quantum resistance: false
Networks: -
Latency: 26.1917ms
xxxxx-gw.anon-sRfFF.domain:
NetBird IP: 100.101.89.65
Public key: XUJ22IRUixmrG1QkinaXiRV5xDz3heYiJiSvg9CRQCU=
Status: Connected
-- detail --
Connection type: P2P
ICE candidate (Local/Remote): host/srflx
ICE candidate endpoints (Local/Remote): 172.25.64.1:59999/198.51.100.1:42727
Relay server address: rels://netbird.anon-EYzIQ.domain:443
Last connection update: 3 hours, 57 minutes ago
Last WireGuard handshake: 1 minute, 56 seconds ago
Transfer status (received/sent) 30.8 KiB/54.5 KiB
Quantum resistance: false
Networks: 10.10.0.0/24, 10.2.0.1/32, 10.253.241.134/32
Latency: 21.3157ms
bigstorage.anon-sRfFF.domain:
NetBird IP: 100.101.137.207
Public key: zzukqkBnZod9n1+kc7V5OYHpzXLa0SSLPFRM5oyrUQA=
Status: Connected
-- detail --
Connection type: P2P
ICE candidate (Local/Remote): host/host
ICE candidate endpoints (Local/Remote): 172.25.64.1:59999/198.51.100.2:46892
Relay server address: rels://netbird.anon-EYzIQ.domain:443
Last connection update: 4 hours, 3 minutes ago
Last WireGuard handshake: 2 minutes, 40 seconds ago
Transfer status (received/sent) 15.2 KiB/25.9 KiB
Quantum resistance: false
Networks: -
Latency: 37.8821ms
udm-se-xxxxx.anon-sRfFF.domain:
NetBird IP: 100.101.237.186
Public key: FoQrI4VwnKGIYJ6/maEgny5zxNnXwpYHkzxnafU8qQ4=
Status: Connecting
-- detail --
Connection type: -
ICE candidate (Local/Remote): -/-
ICE candidate endpoints (Local/Remote): -/-
Relay server address:
Last connection update: 4 hours, 4 minutes ago
Last WireGuard handshake: -
Transfer status (received/sent) 0 B/0 B
Quantum resistance: false
Networks: -
Latency: 0s
Events:
[WARNING] DNS (5d300c63-d832-42a0-8b5c-7057c521f20a)
Message: All upstream servers failed (probe failed)
Time: 4 hours, 4 minutes ago
Metadata: upstreams: 100.101.89.65:53, 100.101.11.184:53
[WARNING] DNS (2a4ef4ba-95bb-4a9b-b777-d5a9a1b7c635)
Message: All upstream servers failed (probe failed)
Time: 4 hours, 4 minutes ago
Metadata: upstreams: 100.101.89.65:53, 100.101.11.184:53
[WARNING] DNS (16fb9040-aeeb-4465-8256-29d5b7a84d95)
Message: All upstream servers failed (probe failed)
Time: 4 hours, 4 minutes ago
Metadata: upstreams: 100.101.89.65:53, 100.101.11.184:53
[INFO] SYSTEM (e83fdc87-005b-44eb-87ce-9779bd408a7d)
Message: Network map updated
Time: 4 hours, 4 minutes ago
[INFO] SYSTEM (da5c2a3d-af06-43f1-8c32-3c39dde48be6)
Message: Network map updated
Time: 3 hours, 26 minutes ago
[INFO] SYSTEM (b8caabc9-0bf5-4465-9091-c515e8f34290)
Message: Network map updated
Time: 3 hours, 26 minutes ago
[INFO] SYSTEM (0d0a79ed-3bd0-4725-9edb-b8586d9f9728)
Message: Network map updated
Time: 2 hours ago
OS: windows/amd64
Daemon version: 0.64.5
CLI version: 0.64.5
Profile: default
Management: Connected to https://netbird.anon-EYzIQ.domain:443
Signal: Connected to https://netbird.anon-EYzIQ.domain:443
Relays:
[stun:netbird.anon-EYzIQ.domain:3478] is Available
[rels://netbird.anon-EYzIQ.domain:443] is Available
Nameservers:
[100.101.89.65:53, 100.101.11.184:53] for [intra.anon-EYzIQ.domain, platform.anon-EYzIQ.domain, pm.anon-EYzIQ.domain] is Available
FQDN: marcel-xps-16.anon-sRfFF.domain
NetBird IP: 100.101.94.174/16
Interface type: Userspace
Quantum resistance: false
Lazy connection: false
SSH Server: Disabled
Networks: -
Peers count: 5/6 Connected
Create and upload a debug bundle, and share the returned file key:
59ea9a96fb39f1392bb1571ae08a5b433954fd2e557a6c2598dfa30a86ff2d61/d287c902-cbf5-428d-ba6e-6a011b1e08f5
Screenshots
n/a
Additional context
Add any other context about the problem here.
Have you tried these troubleshooting steps?
- [ x] Reviewed client troubleshooting (if applicable)
- [ x] Checked for newer NetBird versions
- [ x] Searched for similar issues on GitHub (including closed ones)
- [ x] Restarted the NetBird client
- [ x] Disabled other VPN software
- [ x] Checked firewall settings