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Master password invalid after domain change + image update #2501
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Originally created by @citrusjunoss on GitHub (Jan 6, 2026).
Prerequisites
Vaultwarden Support String
[2026-01-06 13:34:35.850][vaultwarden::api::identity][ERROR] Username or password is incorrect. Try again. IP: 58.251.23.66. Username: xxxxxx.
[2026-01-06 13:34:35.850][response][INFO] (login) POST /identity/connect/token => 400 Bad Request
[2026-01-06 13:38:03.983][request][INFO] POST /identity/accounts/register/send-verification-email
[2026-01-06 13:38:03.989][vaultwarden::api::identity][ERROR] Registration not allowed or user already exists
[2026-01-06 13:38:03.989][response][INFO] (register_verification_email) POST /identity/accounts/register/send-verification-email => 400 Bad Request
[2026-01-06 13:50:12.208][request][INFO] GET /admin/diagnostics
[2026-01-06 13:50:12.209][response][INFO] (web_files) GET /<p..> [10] => 404 Not Found
[2026-01-06 13:50:13.368][vaultwarden::api::web][ERROR] Static file not found: bootstrap.css.map
Vaultwarden Build Version
1.34.3
Deployment method
Official Container Image
Custom deployment method
No response
Reverse Proxy
nginx 1.20
Host/Server Operating System
NAS/SAN
Operating System Version
No response
Clients
Web Vault
Client Version
No response
Steps To Reproduce
Run Vaultwarden with existing data (Docker)
Confirm login works on the original domain
Change the public domain (via reverse proxy)
Update Vaultwarden to the latest Docker image
Restart container
Attempt login with original master password
Expected Result
reset the master password, or
recover access to existing vault data?
Actual Result
Login fails
Error: Invalid master password
Existing vault data becomes inaccessible
Logs
Screenshots or Videos
No response
Additional Context
The master password was not changed
The data directory was not deleted or reset
Only the domain and image version were changed
It is currently unclear whether domain binding, public URL, or encryption-related changes could cause this behavior
@stefan0xC commented on GitHub (Jan 6, 2026):
Can you enable the
/adminpage and check if there are still users listed? And can you also generate the Support String on the Diagnostics tab?Did you only restart the container or did you recreate it with the new image? Because the logs are still from
1.34.3.What do you mean by that? Why would you expect that?