Cannot login after downgrade 2025.8.0 to 2025.7.0 #356

New Issue

MrUnknownDE · 2026-04-05T20:59:36+02:00

MrUnknownDE commented

2026-04-05 20:59:36 +02:00

Originally created by @wookash on 9/12/2025

Prerequisites

I have searched the existing Closed AND Open Issues AND Discussions
I have searched and read the documentation

Vaultwarden Support String

Your environment (Generated via diagnostics page)

Vaultwarden version: v1.34.3-a2ad1dc7
Web-vault version: v2025.8.0
OS/Arch: linux/aarch64
Running within a container: true (Base: Debian)
Database type: SQLite
Database version: 3.50.2
Uses config.json: true
Uses a reverse proxy: false
Internet access: true
Internet access via a proxy: false
DNS Check: true
TZ environment:
Browser/Server Time Check: true
Server/NTP Time Check: true
Domain Configuration Check: false
HTTPS Check: true
Websocket Check: true
HTTP Response Checks: true

Config & Details (Generated via diagnostics page)

Show Config & Details

Environment settings which are overridden: DOMAIN, SIGNUPS_ALLOWED, INVITATIONS_ALLOWED, SSO_ENABLED, SSO_ONLY, SSO_CLIENT_ID, SSO_CLIENT_SECRET, SSO_AUTHORITY, SSO_DEBUG_TOKENS, SMTP_HOST, SMTP_SECURITY, SMTP_PORT, SMTP_FROM, SMTP_FROM_NAME, SMTP_USERNAME, SMTP_PASSWORD, SMTP_AUTH_MECHANISM, HELO_NAME

Config:

{
  "_duo_akey": null,
  "_enable_duo": false,
  "_enable_email_2fa": true,
  "_enable_smtp": true,
  "_enable_yubico": true,
  "_icon_service_csp": "",
  "_icon_service_url": "",
  "_ip_header_enabled": true,
  "_max_note_size": 10000,
  "_smtp_img_src": "***:",
  "admin_ratelimit_max_burst": 3,
  "admin_ratelimit_seconds": 300,
  "admin_session_lifetime": 20,
  "admin_token": null,
  "allowed_connect_src": "",
  "allowed_iframe_ancestors": "",
  "attachments_folder": "data/attachments",
  "auth_request_purge_schedule": "30 * * * * *",
  "authenticator_disable_time_drift": false,
  "data_folder": "data",
  "database_conn_init": "",
  "database_idle_timeout": 600,
  "database_max_conns": 10,
  "database_min_conns": 2,
  "database_timeout": 30,
  "database_url": "***************",
  "db_connection_retries": 15,
  "disable_2fa_remember": false,
  "disable_admin_token": true,
  "disable_icon_download": false,
  "domain": "*****://***********************",
  "domain_origin": "*****://***********************",
  "domain_path": "",
  "domain_set": true,
  "duo_context_purge_schedule": "30 * * * * *",
  "duo_host": null,
  "duo_ikey": null,
  "duo_skey": null,
  "duo_use_iframe": false,
  "email_2fa_auto_fallback": false,
  "email_2fa_enforce_on_verified_invite": false,
  "email_attempts_limit": 3,
  "email_change_allowed": true,
  "email_expiration_time": 600,
  "email_token_size": 6,
  "emergency_access_allowed": true,
  "emergency_notification_reminder_schedule": "0 3 * * * *",
  "emergency_request_timeout_schedule": "0 7 * * * *",
  "enable_db_wal": true,
  "enable_websocket": true,
  "enforce_single_org_with_reset_pw_policy": false,
  "event_cleanup_schedule": "0 10 0 * * *",
  "events_days_retain": null,
  "experimental_client_feature_flags": "",
  "extended_logging": true,
  "helo_name": "***********************",
  "hibp_api_key": null,
  "http_request_block_non_global_ips": true,
  "http_request_block_regex": null,
  "icon_blacklist_non_global_ips": true,
  "icon_blacklist_regex": null,
  "icon_cache_folder": "data/icon_cache",
  "icon_cache_negttl": 259200,
  "icon_cache_ttl": 2592000,
  "icon_download_timeout": 10,
  "icon_redirect_code": 302,
  "icon_service": "internal",
  "incomplete_2fa_schedule": "30 * * * * *",
  "incomplete_2fa_time_limit": 3,
  "increase_note_size_limit": false,
  "invitation_expiration_hours": 120,
  "invitation_org_name": "",
  "invitations_allowed": false,
  "ip_header": "X-Real-IP",
  "job_poll_interval_ms": 30000,
  "log_file": null,
  "log_level": "debug",
  "log_timestamp_format": "%Y-%m-%d %H:%M:%S.%3f",
  "login_ratelimit_max_burst": 10,
  "login_ratelimit_seconds": 60,
  "org_attachment_limit": null,
  "org_creation_users": "",
  "org_events_enabled": false,
  "org_groups_enabled": false,
  "password_hints_allowed": true,
  "password_iterations": 100000,
  "purge_incomplete_sso_nonce": "0 20 0 * * *",
  "push_enabled": false,
  "push_identity_uri": "https://identity.bitwarden.com",
  "push_installation_id": "***",
  "push_installation_key": "***",
  "push_relay_uri": "https://push.bitwarden.com",
  "reload_templates": false,
  "require_device_email": false,
  "rsa_key_filename": "data/rsa_key",
  "send_purge_schedule": "0 5 * * * *",
  "sendmail_command": null,
  "sends_allowed": true,
  "sends_folder": "data/sends",
  "show_password_hint": false,
  "signups_allowed": false,
  "signups_domains_whitelist": "",
  "signups_verify": false,
  "signups_verify_resend_limit": 6,
  "signups_verify_resend_time": 3600,
  "smtp_accept_invalid_certs": false,
  "smtp_accept_invalid_hostnames": false,
  "smtp_auth_mechanism": "Login",
  "smtp_debug": false,
  "smtp_embed_images": true,
  "smtp_explicit_tls": null,
  "smtp_from": "******************",
  "smtp_from_name": "",
  "smtp_host": "*************************",
  "smtp_password": "***",
  "smtp_port": 587,
  "smtp_security": "starttls",
  "smtp_ssl": true,
  "smtp_timeout": 15,
  "smtp_username": "*************************",
  "sso_allow_unknown_email_verification": false,
  "sso_audience_trusted": null,
  "sso_auth_only_not_session": false,
  "sso_authority": "*****://******************",
  "sso_authorize_extra_params": "",
  "sso_callback_path": "*****://****************************************************",
  "sso_client_cache_expiration": 0,
  "sso_client_id": "************************************",
  "sso_client_secret": "***",
  "sso_debug_tokens": false,
  "sso_enabled": true,
  "sso_master_password_policy": null,
  "sso_only": false,
  "sso_pkce": true,
  "sso_scopes": "email profile",
  "sso_signups_match_email": true,
  "templates_folder": "data/templates",
  "tmp_folder": "data/tmp",
  "trash_auto_delete_days": null,
  "trash_purge_schedule": "0 5 0 * * *",
  "use_sendmail": false,
  "use_syslog": false,
  "user_attachment_limit": null,
  "user_send_limit": null,
  "web_vault_enabled": true,
  "web_vault_folder": "web-vault/",
  "yubico_client_id": null,
  "yubico_secret_key": null,
  "yubico_server": null
}

Vaultwarden Build Version

1.34.3

Deployment method

Official Container Image

Custom deployment method

hello,

I wanted to test the new sso feature so I switched to from latest to testing image and now when I downgraded back to 1.34.3 stable I cannot login, I got an error: "An error has occurred. Serde", see the container logs below:

and i get this email:

I don't get any prompt for 2FA (I have TOTP and passkey)

Reverse Proxy

nginx

Host/Server Operating System

Linux

Operating System Version

debian 12

Clients

iOS, Browser Extension, Web Vault

Client Version

No response

Steps To Reproduce

downgrade from 1.34.3 testing to 1.34.4 stable image
attempt log in

Expected Result

successful prompt for 2FA and login

Actual Result

error "An error has occurred. Serde"

Logs

`[2025-09-12 17:35:00.689][request][INFO] GET /

[2025-09-12 17:35:00.692][response][INFO] (web_index) GET / => 200 OK

[2025-09-12 17:35:01.031][request][INFO] GET /

[2025-09-12 17:35:01.032][response][INFO] (web_index) GET / => 200 OK

[2025-09-12 17:35:01.248][request][INFO] GET /

[2025-09-12 17:35:01.248][response][INFO] (web_index) GET / => 200 OK

[2025-09-12 17:35:01.466][request][INFO] GET /

[2025-09-12 17:35:01.466][response][INFO] (web_index) GET / => 200 OK

[2025-09-12 17:35:01.619][request][INFO] GET /

[2025-09-12 17:35:01.620][response][INFO] (web_index) GET / => 200 OK

[2025-09-12 17:35:05.638][request][INFO] GET /api/devices/knowndevice

[2025-09-12 17:35:05.649][response][INFO] (get_known_device) GET /api/devices/knowndevice => 200 OK

[2025-09-12 17:35:10.248][request][INFO] POST /identity/accounts/prelogin

[2025-09-12 17:35:10.250][response][INFO] (prelogin) POST /identity/accounts/prelogin => 200 OK

[2025-09-12 17:35:10.350][request][INFO] POST /identity/connect/token

[2025-09-12 17:35:10.505][error][ERROR] Serde.

[CAUSE] Error("missing field type_", line: 1, column: 623)

[2025-09-12 17:35:10.505][response][INFO] (login) POST /identity/connect/token => 400 Bad Request`

Screenshots or Videos

No response

Additional Context

No response

*Originally created by @wookash on 9/12/2025* ### Prerequisites - [x] I have searched the existing **Closed _AND_ Open** [Issues](https://github.com/dani-garcia/vaultwarden/issues?q=is%3Aissue%20) **_AND_** [Discussions](https://github.com/dani-garcia/vaultwarden/discussions?discussions_q=) - [x] I have searched and read the [documentation](https://github.com/dani-garcia/vaultwarden/wiki/) ### Vaultwarden Support String ### Your environment (Generated via diagnostics page) * Vaultwarden version: v1.34.3-a2ad1dc7 * Web-vault version: v2025.8.0 * OS/Arch: linux/aarch64 * Running within a container: true (Base: Debian) * Database type: SQLite * Database version: 3.50.2 * Uses config.json: true * Uses a reverse proxy: false * Internet access: true * Internet access via a proxy: false * DNS Check: true * TZ environment: * Browser/Server Time Check: true * Server/NTP Time Check: true * Domain Configuration Check: false * HTTPS Check: true * Websocket Check: true * HTTP Response Checks: true ### Config & Details (Generated via diagnostics page) <details><summary>Show Config & Details</summary> **Environment settings which are overridden:** DOMAIN, SIGNUPS_ALLOWED, INVITATIONS_ALLOWED, SSO_ENABLED, SSO_ONLY, SSO_CLIENT_ID, SSO_CLIENT_SECRET, SSO_AUTHORITY, SSO_DEBUG_TOKENS, SMTP_HOST, SMTP_SECURITY, SMTP_PORT, SMTP_FROM, SMTP_FROM_NAME, SMTP_USERNAME, SMTP_PASSWORD, SMTP_AUTH_MECHANISM, HELO_NAME **Config:** ```json { "_duo_akey": null, "_enable_duo": false, "_enable_email_2fa": true, "_enable_smtp": true, "_enable_yubico": true, "_icon_service_csp": "", "_icon_service_url": "", "_ip_header_enabled": true, "_max_note_size": 10000, "_smtp_img_src": "***:", "admin_ratelimit_max_burst": 3, "admin_ratelimit_seconds": 300, "admin_session_lifetime": 20, "admin_token": null, "allowed_connect_src": "", "allowed_iframe_ancestors": "", "attachments_folder": "data/attachments", "auth_request_purge_schedule": "30 * * * * *", "authenticator_disable_time_drift": false, "data_folder": "data", "database_conn_init": "", "database_idle_timeout": 600, "database_max_conns": 10, "database_min_conns": 2, "database_timeout": 30, "database_url": "***************", "db_connection_retries": 15, "disable_2fa_remember": false, "disable_admin_token": true, "disable_icon_download": false, "domain": "*****://***********************", "domain_origin": "*****://***********************", "domain_path": "", "domain_set": true, "duo_context_purge_schedule": "30 * * * * *", "duo_host": null, "duo_ikey": null, "duo_skey": null, "duo_use_iframe": false, "email_2fa_auto_fallback": false, "email_2fa_enforce_on_verified_invite": false, "email_attempts_limit": 3, "email_change_allowed": true, "email_expiration_time": 600, "email_token_size": 6, "emergency_access_allowed": true, "emergency_notification_reminder_schedule": "0 3 * * * *", "emergency_request_timeout_schedule": "0 7 * * * *", "enable_db_wal": true, "enable_websocket": true, "enforce_single_org_with_reset_pw_policy": false, "event_cleanup_schedule": "0 10 0 * * *", "events_days_retain": null, "experimental_client_feature_flags": "", "extended_logging": true, "helo_name": "***********************", "hibp_api_key": null, "http_request_block_non_global_ips": true, "http_request_block_regex": null, "icon_blacklist_non_global_ips": true, "icon_blacklist_regex": null, "icon_cache_folder": "data/icon_cache", "icon_cache_negttl": 259200, "icon_cache_ttl": 2592000, "icon_download_timeout": 10, "icon_redirect_code": 302, "icon_service": "internal", "incomplete_2fa_schedule": "30 * * * * *", "incomplete_2fa_time_limit": 3, "increase_note_size_limit": false, "invitation_expiration_hours": 120, "invitation_org_name": "", "invitations_allowed": false, "ip_header": "X-Real-IP", "job_poll_interval_ms": 30000, "log_file": null, "log_level": "debug", "log_timestamp_format": "%Y-%m-%d %H:%M:%S.%3f", "login_ratelimit_max_burst": 10, "login_ratelimit_seconds": 60, "org_attachment_limit": null, "org_creation_users": "", "org_events_enabled": false, "org_groups_enabled": false, "password_hints_allowed": true, "password_iterations": 100000, "purge_incomplete_sso_nonce": "0 20 0 * * *", "push_enabled": false, "push_identity_uri": "https://identity.bitwarden.com", "push_installation_id": "***", "push_installation_key": "***", "push_relay_uri": "https://push.bitwarden.com", "reload_templates": false, "require_device_email": false, "rsa_key_filename": "data/rsa_key", "send_purge_schedule": "0 5 * * * *", "sendmail_command": null, "sends_allowed": true, "sends_folder": "data/sends", "show_password_hint": false, "signups_allowed": false, "signups_domains_whitelist": "", "signups_verify": false, "signups_verify_resend_limit": 6, "signups_verify_resend_time": 3600, "smtp_accept_invalid_certs": false, "smtp_accept_invalid_hostnames": false, "smtp_auth_mechanism": "Login", "smtp_debug": false, "smtp_embed_images": true, "smtp_explicit_tls": null, "smtp_from": "******************", "smtp_from_name": "", "smtp_host": "*************************", "smtp_password": "***", "smtp_port": 587, "smtp_security": "starttls", "smtp_ssl": true, "smtp_timeout": 15, "smtp_username": "*************************", "sso_allow_unknown_email_verification": false, "sso_audience_trusted": null, "sso_auth_only_not_session": false, "sso_authority": "*****://******************", "sso_authorize_extra_params": "", "sso_callback_path": "*****://****************************************************", "sso_client_cache_expiration": 0, "sso_client_id": "************************************", "sso_client_secret": "***", "sso_debug_tokens": false, "sso_enabled": true, "sso_master_password_policy": null, "sso_only": false, "sso_pkce": true, "sso_scopes": "email profile", "sso_signups_match_email": true, "templates_folder": "data/templates", "tmp_folder": "data/tmp", "trash_auto_delete_days": null, "trash_purge_schedule": "0 5 0 * * *", "use_sendmail": false, "use_syslog": false, "user_attachment_limit": null, "user_send_limit": null, "web_vault_enabled": true, "web_vault_folder": "web-vault/", "yubico_client_id": null, "yubico_secret_key": null, "yubico_server": null } ``` </details> ### Vaultwarden Build Version 1.34.3 ### Deployment method Official Container Image ### Custom deployment method hello, I wanted to test the new sso feature so I switched to from latest to testing image and now when I downgraded back to 1.34.3 stable I cannot login, I got an error: "An error has occurred. Serde", see the container logs below: and i get this email: > Someone attempted to log into your account with the correct master password, but did not provide the correct token or action required to complete the two-step login process within 3 minutes of the initial login attempt. -- I don't get any prompt for 2FA (I have TOTP and passkey) ### Reverse Proxy nginx ### Host/Server Operating System Linux ### Operating System Version debian 12 ### Clients iOS, Browser Extension, Web Vault ### Client Version _No response_ ### Steps To Reproduce downgrade from 1.34.3 testing to 1.34.4 stable image attempt log in ### Expected Result successful prompt for 2FA and login ### Actual Result error "An error has occurred. Serde" ### Logs ```text `[2025-09-12 17:35:00.689][request][INFO] GET / [2025-09-12 17:35:00.692][response][INFO] (web_index) GET / => 200 OK [2025-09-12 17:35:01.031][request][INFO] GET / [2025-09-12 17:35:01.032][response][INFO] (web_index) GET / => 200 OK [2025-09-12 17:35:01.248][request][INFO] GET / [2025-09-12 17:35:01.248][response][INFO] (web_index) GET / => 200 OK [2025-09-12 17:35:01.466][request][INFO] GET / [2025-09-12 17:35:01.466][response][INFO] (web_index) GET / => 200 OK [2025-09-12 17:35:01.619][request][INFO] GET / [2025-09-12 17:35:01.620][response][INFO] (web_index) GET / => 200 OK [2025-09-12 17:35:05.638][request][INFO] GET /api/devices/knowndevice [2025-09-12 17:35:05.649][response][INFO] (get_known_device) GET /api/devices/knowndevice => 200 OK [2025-09-12 17:35:10.248][request][INFO] POST /identity/accounts/prelogin [2025-09-12 17:35:10.250][response][INFO] (prelogin) POST /identity/accounts/prelogin => 200 OK [2025-09-12 17:35:10.350][request][INFO] POST /identity/connect/token [2025-09-12 17:35:10.505][error][ERROR] Serde. [CAUSE] Error("missing field type_", line: 1, column: 623) [2025-09-12 17:35:10.505][response][INFO] (login) POST /identity/connect/token => 400 Bad Request` ``` ### Screenshots or Videos _No response_ ### Additional Context _No response_

MrUnknownDE closed this issue

2026-04-05 20:59:36 +02:00

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Reference: github/vaultwarden#356