After upgrading to version 1.9.1 we’ve started to get rejections from keycloak.js while getting token based on code. If we enter base url (http://example.com <http://example.com/>) then the app works fine, login is successful and token is retrieved. Unfortunately when entering this child page (https://example.com/?redirect_fragment=/asset-library/card-view/ <https://example.com/?redirect_fragment=/asset-library/card-view/> - it is sent from javascript with redirect_fragment encoded, but in keycloak logs it’s visible with this fragment decoded) we get error 400 while getting token after succesful login and obtaining the code. The precise response is: {"error_description":"Incorrect redirect_uri","error":"invalid_grant”} Why is that? In valid redirects uri in keycloak we have (just in case): - https://example.com <https://example.com/>* - https://example.com <https://example.com/>/* - https://example.com/?redirect_fragment=/asset-library/card-view/ <https://example.com/?redirect_fragment=/asset-library/card-view/> - https://example.com/?redirect_fragment=%2Fasset-library%2Fcard-view%2F <https://example.com/?redirect_fragment=/asset-library/card-view/> - http://example.com <http://example.com/>* - http://example.com <http://example.com/>/* - http://example.com/?redirect_fragment=/asset-library/card-view/ <http://example.com/?redirect_fragment=/asset-library/card-view/> - http://example.com/?redirect_fragment=%2Fasset-library%2Fcard-view%2F <http://example.com/?redirect_fragment=/asset-library/card-view/> Here are the logs of succesful log in with redirect URI beeing http://example.com <http://example.com/> : 11:38:47,934 DEBUG [org.jboss.jca.core.connectionmanager.pool.validator.ConnectionValidator] (ConnectionValidator) Notifying pools, interval: 30000 11:38:47,935 DEBUG [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool] (ConnectionValidator) Checking for connection within frequency 11:38:47,936 DEBUG [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool] (ConnectionValidator) Returning for connection within frequency 11:38:47,937 DEBUG [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool] (ConnectionValidator) Checking for connection within frequency 11:38:47,938 DEBUG [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool] (ConnectionValidator) Returning for connection within frequency 11:38:47,938 DEBUG [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool] (ConnectionValidator) Checking for connection within frequency 11:38:49,335 DEBUG [org.springframework.boot.context.web.OrderedRequestContextFilter] (default task-14) Bound request context to thread: HttpServletRequestImpl [ GET /auth/realms/xxxxxx/protocol/openid-connect/auth ] 11:38:49,336 DEBUG [org.jboss.resteasy.resteasy_jaxrs.i18n] (default task-14) RESTEASY002315: PathInfo: /realms/xxxxxx/protocol/openid-connect/auth 11:38:49,348 DEBUG [org.keycloak.services] (default task-14) AUTHENTICATE 11:38:49,357 DEBUG [org.keycloak.services] (default task-14) AUTHENTICATE ONLY 11:38:49,358 DEBUG [org.keycloak.services] (default task-14) processFlow 11:38:49,358 DEBUG [org.keycloak.services] (default task-14) check execution: auth-cookie requirement: ALTERNATIVE 11:38:49,358 DEBUG [org.keycloak.services] (default task-14) authenticator: auth-cookie 11:38:49,359 DEBUG [org.keycloak.services] (default task-14) invoke authenticator.authenticate 11:38:49,360 DEBUG [org.keycloak.services] (default task-14) token active - active: true, issued-at: 1,461,152,319, not-before: 0 11:38:49,361 DEBUG [org.keycloak.services] (default task-14) authenticator SUCCESS: auth-cookie 11:38:49,361 DEBUG [org.keycloak.services] (default task-14) check execution: auth-spnego requirement: DISABLED 11:38:49,361 DEBUG [org.keycloak.services] (default task-14) execution is processed 11:38:49,362 DEBUG [org.keycloak.services] (default task-14) check execution: null requirement: ALTERNATIVE 11:38:49,362 DEBUG [org.keycloak.services] (default task-14) Skip alternative execution 11:38:49,362 DEBUG [org.keycloak.services] (default task-14) Using full scope for client 11:38:49,363 DEBUG [org.keycloak.events] (default task-14) type=LOGIN, realmId=xxxxxx, clientId=api, userId=64e2ec92-a6ee-4705-a8b3-adebe9c3c816, ipAddress=172.17.0.1, auth_method=openid-connect, auth_type=code, response_type=code, redirect_uri=https://example.com/ <https://example.com/>;, consent=no_consent_required, code_id=1e564327-4775-4cbc-8e15-c3b553bc7585, response_mode=fragment, username=xxxxxx 11:38:49,384 DEBUG [org.keycloak.services] (default task-14) Create login cookie - name: KEYCLOAK_IDENTITY, path: /auth/realms/xxxxxx, max-age: -1 11:38:49,385 DEBUG [org.keycloak.services] (default task-14) redirectAccessCode: state: 0ecc910f-b0d2-4b9f-80ae-105c2dc28644 11:38:49,387 DEBUG [org.springframework.boot.context.web.OrderedRequestContextFilter] (default task-14) Cleared thread-bound request context: HttpServletRequestImpl [ GET /auth/realms/xxxxxx/protocol/openid-connect/auth ] 11:38:50,139 DEBUG [org.springframework.boot.context.web.OrderedRequestContextFilter] (default task-6) Bound request context to thread: HttpServletRequestImpl [ POST /auth/realms/xxxxxx/protocol/openid-connect/token ] 11:38:50,140 DEBUG [org.jboss.resteasy.resteasy_jaxrs.i18n] (default task-6) RESTEASY002315: PathInfo: /realms/xxxxxx/protocol/openid-connect/token 11:38:50,147 DEBUG [org.keycloak.services] (default task-6) AUTHENTICATE CLIENT 11:38:50,148 DEBUG [org.keycloak.services] (default task-6) client authenticator: client-secret 11:38:50,148 DEBUG [org.keycloak.services] (default task-6) client authenticator SUCCESS: client-secret 11:38:50,149 DEBUG [org.keycloak.services] (default task-6) Client api authenticated by client-secret 11:38:50,178 DEBUG [org.keycloak.events] (default task-6) type=CODE_TO_TOKEN, realmId=xxxxxx, clientId=api, userId=64e2ec92-a6ee-4705-a8b3-adebe9c3c816, ipAddress=172.17.0.1, token_id=dd46b7cd-6233-4881-8fe1-96e4ed087b37, grant_type=authorization_code, refresh_token_type=Refresh, refresh_token_id=0751e640-397d-45d7-a799-485a0573f20a, code_id=1e564327-4775-4cbc-8e15-c3b553bc7585, client_auth_method=client-secret 11:38:50,182 DEBUG [org.springframework.boot.context.web.OrderedRequestContextFilter] (default task-6) Cleared thread-bound request context: HttpServletRequestImpl [ POST /auth/realms/xxxxxx/protocol/openid-connect/token ] 11:38:50,353 DEBUG [org.springframework.boot.context.web.OrderedRequestContextFilter] (default task-10) Bound request context to thread: HttpServletRequestImpl [ GET /auth/realms/xxxxxx/protocol/openid-connect/userinfo ] 11:38:50,354 DEBUG [org.jboss.resteasy.resteasy_jaxrs.i18n] (default task-10) RESTEASY002315: PathInfo: /realms/xxxxxx/protocol/openid-connect/userinfo 11:38:50,356 DEBUG [org.keycloak.events] (default task-10) type=USER_INFO_REQUEST, realmId=xxxxxx, clientId=api, userId=64e2ec92-a6ee-4705-a8b3-adebe9c3c816, ipAddress=172.17.0.1, auth_method=validate_access_token, username=xxxxxx 11:38:50,358 DEBUG [org.springframework.boot.context.web.OrderedRequestContextFilter] (default task-10) Cleared thread-bound request context: HttpServletRequestImpl [ GET /auth/realms/xxxxxx/protocol/openid-connect/userinfo ] And here are the logs of failed login with redirect URI being https://example.com/?redirect_fragment=/asset-library/card-view/ <https://example.com/?redirect_fragment=/asset-library/card-view/>;: 11:37:15,360 DEBUG [org.springframework.boot.context.web.OrderedRequestContextFilter] (default task-7) Bound request context to thread: HttpServletRequestImpl [ GET /auth/realms/xxxxxx/protocol/openid-connect/auth ] 11:37:15,361 DEBUG [org.jboss.resteasy.resteasy_jaxrs.i18n] (default task-7) RESTEASY002315: PathInfo: /realms/xxxxxx/protocol/openid-connect/auth 11:37:15,366 DEBUG [org.keycloak.services] (default task-7) AUTHENTICATE 11:37:15,367 DEBUG [org.keycloak.services] (default task-7) AUTHENTICATE ONLY 11:37:15,367 DEBUG [org.keycloak.services] (default task-7) processFlow 11:37:15,368 DEBUG [org.keycloak.services] (default task-7) check execution: auth-cookie requirement: ALTERNATIVE 11:37:15,368 DEBUG [org.keycloak.services] (default task-7) authenticator: auth-cookie 11:37:15,369 DEBUG [org.keycloak.services] (default task-7) invoke authenticator.authenticate 11:37:15,371 DEBUG [org.keycloak.services] (default task-7) token active - active: true, issued-at: 1,461,152,203, not-before: 0 11:37:15,373 DEBUG [org.keycloak.services] (default task-7) authenticator SUCCESS: auth-cookie 11:37:15,374 DEBUG [org.keycloak.services] (default task-7) check execution: auth-spnego requirement: DISABLED 11:37:15,374 DEBUG [org.keycloak.services] (default task-7) execution is processed 11:37:15,375 DEBUG [org.keycloak.services] (default task-7) check execution: null requirement: ALTERNATIVE 11:37:15,375 DEBUG [org.keycloak.services] (default task-7) Skip alternative execution 11:37:15,376 DEBUG [org.keycloak.services] (default task-7) Using full scope for client 11:37:15,377 DEBUG [org.keycloak.events] (default task-7) type=LOGIN, realmId=xxxxxx, clientId=api, userId=64e2ec92-a6ee-4705-a8b3-adebe9c3c816, ipAddress=172.17.0.1, auth_method=openid-connect, auth_type=code, response_type=code, redirect_uri=https://example.com/?redirect_fragment=/asset-library/card-v... <https://example.com/?redirect_fragment=/asset-library/card-view/>;, consent=no_consent_required, code_id=a47d3089-699e-4bc5-811c-e4a45655994a, response_mode=fragment, username=xxxxxx 11:37:15,397 DEBUG [org.keycloak.services] (default task-7) Create login cookie - name: KEYCLOAK_IDENTITY, path: /auth/realms/xxxxxx, max-age: -1 11:37:15,398 DEBUG [org.keycloak.services] (default task-7) redirectAccessCode: state: 0e2f72bc-14a4-46f8-8169-c55c85a50830 11:37:15,398 DEBUG [org.springframework.boot.context.web.OrderedRequestContextFilter] (default task-7) Cleared thread-bound request context: HttpServletRequestImpl [ GET /auth/realms/xxxxxx/protocol/openid-connect/auth ] 11:37:16,148 DEBUG [org.springframework.boot.context.web.OrderedRequestContextFilter] (default task-13) Bound request context to thread: HttpServletRequestImpl [ POST /auth/realms/xxxxxx/protocol/openid-connect/token ] 11:37:16,148 DEBUG [org.jboss.resteasy.resteasy_jaxrs.i18n] (default task-13) RESTEASY002315: PathInfo: /realms/xxxxxx/protocol/openid-connect/token 11:37:16,150 DEBUG [org.keycloak.services] (default task-13) AUTHENTICATE CLIENT 11:37:16,150 DEBUG [org.keycloak.services] (default task-13) client authenticator: client-secret 11:37:16,151 DEBUG [org.keycloak.services] (default task-13) client authenticator SUCCESS: client-secret 11:37:16,151 DEBUG [org.keycloak.services] (default task-13) Client api authenticated by client-secret 11:37:16,151 WARN [org.keycloak.events] (default task-13) type=CODE_TO_TOKEN_ERROR, realmId=xxxxxx, clientId=api, userId=64e2ec92-a6ee-4705-a8b3-adebe9c3c816, ipAddress=172.17.0.1, error=invalid_code, grant_type=authorization_code, code_id=a47d3089-699e-4bc5-811c-e4a45655994a, client_auth_method=client-secret 11:37:16,153 DEBUG [org.springframework.boot.context.web.OrderedRequestContextFilter] (default task-13) Cleared thread-bound request context: HttpServletRequestImpl [ POST /auth/realms/xxxxxx/protocol/openid-connect/token ] 11:37:17,928 DEBUG [org.jboss.jca.core.connectionmanager.pool.validator.ConnectionValidator] (ConnectionValidator) Notifying pools, interval: 30000 11:37:17,928 DEBUG [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool] (ConnectionValidator) Checking for connection within frequency