Trying to launch Syncthing when already running resets cert.pem to 0 bytes #10053
Description
What happened?
- Start Syncthing.
- Try to start Syncthing again using the same
--config(or--home) directory. - The new instance fails to start with the following error:
[start] 2025/04/12 01:58:55.751711 main.go:432: INFO: syncthing v2.0.0-beta.6 "Hafnium Hornet" (go1.24.2 windows-amd64) builder@github.syncthing.net 2025-04-07 09:43:08 UTC [stnoupgrade]
[start] 2025/04/12 01:58:55.751711 utils.go:64: INFO: Generating ECDSA key and certificate for syncthing...
[start] 2025/04/12 01:58:55.753718 main.go:440: WARNING: Failed to load/generate certificate: save cert: write R:\test\syncthing\syncthing1\cert.pem: The process cannot access the file because another process has locked a portion of the file.
[monitor] 2025/04/12 01:58:55.755224 monitor.go:199: INFO: Syncthing exited: exit status 1
- Despite that, the
cert.pemfile has been wiped out and has a size of 0 bytes.
Tested under Windows 10 x64.
Ref 1: 7762e39
Ref 2: https://forum.syncthing.net/t/syncthing-device-id-keeps-switching/24147
Syncthing version
v1.29.4 and beta v2
Platform & operating system
Windows
Browser version
No response