Problem with sync new versions client (desktop, mobile)

[maciejczarnecki]

Prerequisites

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

Vaultwarden Support String

[h2::proto::connection][DEBUG] Connection::poll; connection error error=GoAway(b"", NO_ERROR, Library)

Vaultwarden Build Version

1.3.43

Deployment method

Official Container Image

Custom deployment method

No response

Reverse Proxy

nginx

Host/Server Operating System

Linux

Operating System Version

No response

Clients

Desktop

Client Version

2025.12

Steps To Reproduce

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. Click on '...'
5. Etc '...'

Expected Result

[h2::proto::connection][DEBUG] Connection::poll; connection error error=GoAway(b"", NO_ERROR, Library)

Actual Result

[h2::proto::connection][DEBUG] Connection::poll; connection error error=GoAway(b"", NO_ERROR, Library)

Logs

Screenshots or Videos

No response

Additional Context

No response

[deajan]

Can confirm that latest Bitwarden 2025.12 client cannot edit entries anymore in Vaultwarden server:

• Open Bitwarden Desktop 2025.12 on Windows-
• select an entry
• edit it by add something in notes
• try to hit save button
• client says The client copy of this cipher is out of date
• sync client
• try to edit again
• client says "Unknown error"

Here's the corresponding vaultwarden server log

[2025-12-19 11:22:51.870][request][INFO] POST /events/collect
[2025-12-19 11:22:51.884][response][INFO] (post_events_collect) POST /events/collect application/json => 200 OK
[2025-12-19 11:22:56.277][request][INFO] POST /identity/connect/token
[2025-12-19 11:22:56.281][response][INFO] (login) POST /identity/connect/token => 200 OK
[2025-12-19 11:22:56.425][request][INFO] GET /api/sync?excludeDomains=true
[2025-12-19 11:22:56.584][response][INFO] (sync) GET /api/sync?<data..> => 200 OK
[2025-12-19 11:23:13.935][request][INFO] PUT /api/ciphers/REDACTED_UUID
[2025-12-19 11:23:13.939][response][INFO] (put_cipher) PUT /api/ciphers/<cipher_id> => 200 OK
[2025-12-19 11:23:14.449][request][INFO] GET /api/tasks
[2025-12-19 11:23:14.450][response][INFO] (web_files) GET /<p..> [10] => 404 Not Found
[2025-12-19 11:25:43.246][request][INFO] PUT /api/ciphers/REDACTED_UUID
[2025-12-19 11:25:43.247][vaultwarden::api::core::ciphers][ERROR] The client copy of this cipher is out of date. Resync the client and try again.
[2025-12-19 11:25:43.247][response][INFO] (put_cipher) PUT /api/ciphers/<cipher_id> => 400 Bad Request
[2025-12-19 11:26:33.929][request][INFO] PUT /api/ciphers/REDACTED_UUID
[2025-12-19 11:26:33.931][vaultwarden::api::core::ciphers][ERROR] The client copy of this cipher is out of date. Resync the client and try again.
[2025-12-19 11:26:33.931][response][INFO] (put_cipher) PUT /api/ciphers/<cipher_id> => 400 Bad Request
[2025-12-19 11:26:34.777][request][INFO] GET /notifications/hub?access_token=REDACTED_TOKEN
[2025-12-19 11:26:34.777][vaultwarden::api::notifications][INFO] Accepting Rocket WS connection from ::ffff:XX.XX.XX.XX
[2025-12-19 11:26:34.777][response][INFO] (websockets_hub) GET /notifications/hub?<data..> => 200 OK
[2025-12-19 11:27:00.230][request][INFO] POST /identity/connect/token
[2025-12-19 11:27:00.232][response][INFO] (login) POST /identity/connect/token => 200 OK
[2025-12-19 11:27:00.385][request][INFO] GET /api/sync?excludeDomains=true
[2025-12-19 11:27:00.495][response][INFO] (sync) GET /api/sync?<data..> => 200 OK
[2025-12-19 11:27:05.549][request][INFO] PUT /api/ciphers/REDACTED_UUID
[2025-12-19 11:27:05.551][response][INFO] (put_cipher) PUT /api/ciphers/<cipher_id> => 200 OK
[2025-12-19 11:27:06.047][request][INFO] GET /api/tasks
[2025-12-19 11:27:06.047][response][INFO] (web_files) GET /<p..> [10] => 404 Not Found

[deajan]

Related to #6561
@maciejczarnecki You should close this one and follow the issue above

[stefan0xC]

@deajan If you look at other recent issues and in discussion that's a known and already fixed issue (#6557 is available in testing). Not sure if that's related to the issue reported here. (But because OP did not provide the support string or steps to reproduce the issue I'm not sure if that is an bug.)

[deajan]

@stefan0xC Understood, already fixed on my side (I just posted the Haproxy config workaround in #6561).

[Frew777]

Same problem. Waiting for a stable release with a fix.

[stefan0xC]

Same problem. Waiting for a stable release with a fix.

Same problem as OP? Because then can you provide more info? I.e. support string, steps to reproduce the issue, etc.?

[simonemargio]

Same problem. Waiting for a stable release with a fix.

Same problem as OP? Because then can you provide more info? I.e. support string, steps to reproduce the issue, etc.?

I don't know if this can be helpful, but I'm having the same problem and can provide some information.

The problem appears to be related to the desktop client and the browser extension.

Currently:

• Desktop: macOS 26.2 (25C56) - Bitwarden 2025.12.0 (52522)
• Extension: Version 2025.12.0 - SDK 'main (0107af7)' - Server version (Third-party) 2025.6.0

I tested on mobile, iOS 26.2 (23C55) - Bitwarden 2025.12.0 (2787), and everything works fine.

The steps to reproduce the problem are those already listed by @deajan previously. Starting from the desktop client or browser extension:

• Select an item
• Make a change (e.g., I change the item name by adding a character)
• Save the change by clicking "Save"
• The client displays "An error has occurred. An unexpected error has occurred."
• I click the "Save" button again
• The client displays "An error has occurred. The client copy of this file is out of date. Resync the client and try again."

Please note, however, that despite the errors, the item is actually modified on the server and appears updated correctly.

Log similar to deajan's:

[2025-12-20 12:40:00.362][request][INFO] GET /api/tasks
[2025-12-20 12:40:00.363][response][INFO] (web_files) GET /<p..> [10] => 404 Not Found
[2025-12-20 12:40:00.690][request][INFO] GET /api/ciphers/54c35458-17d2-4d02-9558-bebd15e381d6
[2025-12-20 12:40:00.694][response][INFO] (get_cipher) GET /api/ciphers/<cipher_id> => 200 OK

Below is the server info:

• Vaultwarden version: v1.34.3
• Web-vault version: v2025.7.0
• OS/Arch: linux/aarch64
• Running within a container: true (Base: Debian)
• Database type: SQLite
• Database version: 3.50.2
• Uses config.json: false
• Uses a reverse proxy: true
• IP Header check: true (X-Forwarded-For)
• Internet access: true
• Internet access via a proxy: false
• DNS Check: true
• Browser/Server Time Check: true
• Server/NTP Time Check: true
• Domain Configuration Check: true
• HTTPS Check: true
• Websocket Check: true
• HTTP Response Checks: false

Config & Details (Generated via diagnostics page)

Config & Details

Failed HTTP Checks:

API calls:
Header: 'content-security-policy' does not contain 'default-src 'none''

Config:

{
  "_duo_akey": null,
  "_enable_duo": true,
  "_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": "***",
  "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_max_conns": 10,
  "database_timeout": 30,
  "database_url": "***************",
  "db_connection_retries": 15,
  "disable_2fa_remember": false,
  "disable_admin_token": false,
  "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": null,
  "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": "SM Vaultwarden",
  "invitations_allowed": false,
  "ip_header": "X-Forwarded-For",
  "job_poll_interval_ms": 30000,
  "log_file": null,
  "log_level": "info",
  "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": 600000,
  "push_enabled": true,
  "push_identity_uri": "https://identity.bitwarden.eu",
  "push_installation_id": "***",
  "push_installation_key": "***",
  "push_relay_uri": "https://api.bitwarden.eu",
  "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": null,
  "smtp_debug": false,
  "smtp_embed_images": true,
  "smtp_explicit_tls": null,
  "smtp_from": "***********************",
  "smtp_from_name": "Vaultwarden",
  "smtp_host": "**************",
  "smtp_password": "***",
  "smtp_port": 587,
  "smtp_security": "starttls",
  "smtp_ssl": null,
  "smtp_timeout": 15,
  "smtp_username": "***********************",
  "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
}

[stefan0xC]

@simonemargio OP posted a specific error message [h2::proto::connection][DEBUG] Connection::poll; connection error error=GoAway(b"", NO_ERROR, Library) without any further information to diagnose the cause or reproduce the issue.

What you are describing seems to be a separate (already known) issue (#6561) that stems from an incompatibility with the current release v1.34.3 and newer clients v2025.12.0 (that btw should be fixed in the latest testing image)...

[BlackDex]

Moved to discussions as there is no clear info on what the issue is exactly and how to reproduce it, all other mentioned issues are as @stefan0xC already mentioned not related to OP and therefor off-topic and that is also already resolved in testing.

[brianfromm]

I've been experiencing the same error since the last update. I just updated my compose file to use the testing release instead of latest. I'll switch back to latest after the fix is merged in. So frustrating, but I'm glad I found this discussion!