# Troubleshooting - [Welcome to Troubleshooting](https://docs.b2core.b2broker.com/troubleshooting/troubleshooting.md): Find solutions to common B2CORE issues. The troubleshooting articles are grouped by topic to help you resolve problems efficiently - [Sign-in & authentication issues](https://docs.b2core.b2broker.com/troubleshooting/sign-in-and-authentication-issues.md): Troubleshoot issues related to sign-in and authentication in B2CORE - [Clients encounter the 404 Not Found error after signing in to the B2CORE UI](https://docs.b2core.b2broker.com/troubleshooting/sign-in-and-authentication-issues/clients-encounter-not-found-error-after-signing-in-to-the-b2core-ui.md): Troubleshooting 404 Not Found errors in the B2CORE UI caused by menu visibility, verification level, or client type restrictions - [Clients experience sign-in issues on the B2CORE mobile app](https://docs.b2core.b2broker.com/troubleshooting/sign-in-and-authentication-issues/clients-experience-sign-in-issues-on-b2core-mobile-app.md): Troubleshooting sign-in issues on the B2CORE mobile app - [Email & notification issues](https://docs.b2core.b2broker.com/troubleshooting/email-and-notification-issues.md): Troubleshoot common issues with email delivery and notification alerts - [Clients not receiving emails sent from B2CORE](https://docs.b2core.b2broker.com/troubleshooting/email-and-notification-issues/clients-not-receiving-emails-from-b2core.md): Troubleshooting email delivery issues in B2CORE when clients don’t receive notifications due to SMTP, templates, or provider problems - [Clients not receiving 2FA codes](https://docs.b2core.b2broker.com/troubleshooting/email-and-notification-issues/clients-not-receiving-2fa-codes.md): Troubleshooting client 2FA issues, including Google Authenticator and SMS confirmation options - [Verification issues](https://docs.b2core.b2broker.com/troubleshooting/verification-issues.md): Troubleshoot issues related to verification and KYC procedures - [Clients can't submit verification requests in the B2CORE UI](https://docs.b2core.b2broker.com/troubleshooting/verification-issues/clients-can-not-submit-verification-requests-in-the-b2core-ui.md): Troubleshooting client issues with submitting verification requests in the B2CORE UI - [Finance issues](https://docs.b2core.b2broker.com/troubleshooting/finance-issues.md): Troubleshoot common issues with payment methods and financial transactions - [Exchanges fail with the Exchange Rate error: the rate for this pair cannot be found, please try another pair](https://docs.b2core.b2broker.com/troubleshooting/finance-issues/exchanges-fail-with-error.md): Troubleshooting exchange failures caused by missing currencies, pairs, or misconfigured rate providers in B2CORE - [Clients not seeing their transactions in the B2CORE UI](https://docs.b2core.b2broker.com/troubleshooting/finance-issues/clients-not-seeing-their-transactions-in-the-b2core-ui.md): Troubleshooting missing B2CORE UI transactions by adjusting operation types and allowed statuses in the Back Office - [Trading platform issues](https://docs.b2core.b2broker.com/troubleshooting/trading-platform-issues.md): Troubleshoot common issues affecting trading platform operations and account management - [Clients can't create trading accounts via the B2CORE UI](https://docs.b2core.b2broker.com/troubleshooting/trading-platform-issues/clients-can-not-create-trading-accounts-via-the-b2core-ui.md): Troubleshooting trading account creation issues in the B2CORE UI caused by platform connection errors, product limits, or misconfigured settings - [Trading accounts appear in the E (Error) or A (Archived) status in the B2CORE Back Office](https://docs.b2core.b2broker.com/troubleshooting/trading-platform-issues/trading-account-appear-in-error-or-archive-status.md): Troubleshooting accounts in the E (Error) or A (Archived) status in B2CORE and resolve connection or platform sync issues - [Localization & B2TRANSLATE issues](https://docs.b2core.b2broker.com/troubleshooting/localization-and-b2translate-issues.md): Troubleshoot issues related to localization and translations using B2TRANSLATE - [Newly enabled language not displaying in the B2CORE UI](https://docs.b2core.b2broker.com/troubleshooting/localization-and-b2translate-issues/newly-enabled-language-not-displaying-in-the-b2core-ui.md): Troubleshooting why a newly enabled language doesn’t appear in the B2CORE UI and learn how to fix it via B2TRANSLATE - [Translation for a key in B2TRANSLATE not reflecting correctly in the B2CORE UI](https://docs.b2core.b2broker.com/troubleshooting/localization-and-b2translate-issues/translation-for-a-key-in-b2translate-not-reflecting-correctly-in-the-b2core-ui.md): Troubleshooting B2TRANSLATE translations not displaying correctly in the B2CORE UI - [Back Office issues](https://docs.b2core.b2broker.com/troubleshooting/back-office-issues.md): Troubleshoot issues related to the B2CORE Back Office - [Back office users encounter the 403 Access Denied error when approving or rejecting client requests](https://docs.b2core.b2broker.com/troubleshooting/back-office-issues/back-office-users-encounter-access-denied-error-when-resolving-requests.md): Troubleshooting the 403 Access Denied error when Back Office users resolving client requests --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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