# \#authentication **URL:** https://forums.nylas.com/tag/authentication/3.md [Latest](https://forums.nylas.com/latest.md) · [Categories](https://forums.nylas.com/categories.md) · [Tags](https://forums.nylas.com/tags.md) --- ## [Issues Retrieving Email Aliases via Get Grant API](https://forums.nylas.com/t/issues-retrieving-email-aliases-via-get-grant-api/1211)
**Author:** [@muneeb](https://forums.nylas.com/u/muneeb)\ **Replies:** 1\ **Last updated:** [July 6, 2026, 12:57pm UTC](https://forums.nylas.com/t/issues-retrieving-email-aliases-via-get-grant-api/1211 "2026-07-06T12:57:51Z")
I’m using the Node.js SDK in my application and noticed that, according to the documentation, the Get Grant API requires the expose\_aliases=true query parameter to return the email\_aliases. However, I’m running into two… --- ## [Error: Maximum number of grants reached for Organization](https://forums.nylas.com/t/error-maximum-number-of-grants-reached-for-organization/1187)
**Author:** [@Chunyoo](https://forums.nylas.com/u/Chunyoo)\ **Replies:** 1\ **Last updated:** [June 4, 2026, 11:34pm UTC](https://forums.nylas.com/t/error-maximum-number-of-grants-reached-for-organization/1187 "2026-06-04T23:34:10Z")
I completed the gmail oauth flow in my application and when I exchanged the refresh token for a grant id Nylas returned this error: Maximum number of grants reached for Organization My Nylas application is currently us… --- ## [Failed To Save Provider - Hosted Auth](https://forums.nylas.com/t/failed-to-save-provider-hosted-auth/1183)
**Author:** [@JeanClaude](https://forums.nylas.com/u/JeanClaude)\ **Replies:** 1\ **Last updated:** [June 3, 2026, 12:08pm UTC](https://forums.nylas.com/t/failed-to-save-provider-hosted-auth/1183 "2026-06-03T12:08:33Z")
Im getting constant errors when trying save clerk provider as a hosted provider. --- ## [Nylas Inbound Emails](https://forums.nylas.com/t/nylas-inbound-emails/1143)
**Author:** [@chrissclearglass](https://forums.nylas.com/u/chrissclearglass)\ **Replies:** 1\ **Last updated:** [April 13, 2026, 12:32pm UTC](https://forums.nylas.com/t/nylas-inbound-emails/1143 "2026-04-13T12:32:31Z")
Hey, we have Full Platform plan of Nylas. We are trying to integrate Nylas into our Laravel backend. Setup 3 environments Production, Staging and Development. We wanted to use the sandbox nylas inbound email for dev, si… --- ## [Google Workspace - Invalid Email](https://forums.nylas.com/t/google-workspace-invalid-email/1099)
**Author:** [@henry](https://forums.nylas.com/u/henry)\ **Replies:** 1\ **Last updated:** [February 18, 2026, 12:20pm UTC](https://forums.nylas.com/t/google-workspace-invalid-email/1099 "2026-02-18T12:20:08Z")
I’m running into a strange issue with my auth flow. Our team recently added a non-sandbox application, with which I’ve been able to authenticate with via Google Chrome (non-incognito). However, when I’m using an incogni… --- ## [Deleting grant does not remove Microsoft app access](https://forums.nylas.com/t/deleting-grant-does-not-remove-microsoft-app-access/1098)
**Author:** [@markwilkins](https://forums.nylas.com/u/markwilkins)\ **Replies:** 1\ **Last updated:** [February 18, 2026, 12:19pm UTC](https://forums.nylas.com/t/deleting-grant-does-not-remove-microsoft-app-access/1098 "2026-02-18T12:19:18Z")
Hi, When I delete a grant that is through a Microsoft connector, I am finding that the application access is not removed from the Microsoft side of things. Example test: Went through hosted OAuth flow and connected to… --- ## [Help getting Yahoo Application Approved](https://forums.nylas.com/t/help-getting-yahoo-application-approved/966)
**Author:** [@davidpal](https://forums.nylas.com/u/davidpal)\ **Replies:** 9\ **Last updated:** [January 15, 2026, 5:56pm UTC](https://forums.nylas.com/t/help-getting-yahoo-application-approved/966 "2026-01-15T17:56:40Z")
Hi Nylas community! For some reason our application for Yahoo OAuth credentials keeps getting rejected. Does anyone have any tips or connections that can help? Thanks! --- ## [Access blocked: Your institution’s admin needs to review Nylas](https://forums.nylas.com/t/access-blocked-your-institution-s-admin-needs-to-review-nylas/1051)
**Author:** [@henry](https://forums.nylas.com/u/henry)\ **Replies:** 1\ **Last updated:** [January 12, 2026, 6:38pm UTC](https://forums.nylas.com/t/access-blocked-your-institution-s-admin-needs-to-review-nylas/1051 "2026-01-12T18:38:03Z")
Hi, new Nylas user here. I’m trying to test the Nylas OAuth 2.0 flow, using Google Chrome, the “free” plan, the Sandbox application, the provided Google client, and my company’s email account. However, I’m got hit with … --- ## [Issue Retrieving All Messages via IMAP for @126.com and @163.com Accounts](https://forums.nylas.com/t/issue-retrieving-all-messages-via-imap-for-126-com-and-163-com-accounts/893)
**Author:** [@EC\_dev](https://forums.nylas.com/u/EC_dev)\ **Replies:** 4\ **Last updated:** [December 22, 2025, 5:21am UTC](https://forums.nylas.com/t/issue-retrieving-all-messages-via-imap-for-126-com-and-163-com-accounts/893 "2025-12-22T05:21:19Z")
Hello Nylas Team, I am experiencing difficulties retrieving all messages using IMAP for my @126.com126.com126.c126.com126.com126.c@163.comm126.com and @163.com email accounts. While I have successfully authenticated both… --- ## [Getting 45002 error on oauth callback when user tries to connect their Google account](https://forums.nylas.com/t/getting-45002-error-on-oauth-callback-when-user-tries-to-connect-their-google-account/1013)
**Author:** [@erikadaptive](https://forums.nylas.com/u/erikadaptive)\ **Replies:** 1\ **Last updated:** [December 12, 2025, 12:18pm UTC](https://forums.nylas.com/t/getting-45002-error-on-oauth-callback-when-user-tries-to-connect-their-google-account/1013 "2025-12-12T12:18:38Z")
We’re using Nylas hosted auth solution and for a specific user we’re getting these error params on the callback: error=oauth\_failed&error\_code=45002&error\_description=Grant+creation+failed Haven’t found more informat… --- ## [Google approval required when syncing calendar](https://forums.nylas.com/t/google-approval-required-when-syncing-calendar/1015)
**Author:** [@Engineering](https://forums.nylas.com/u/Engineering)\ **Replies:** 1\ **Last updated:** [December 12, 2025, 12:11pm UTC](https://forums.nylas.com/t/google-approval-required-when-syncing-calendar/1015 "2025-12-12T12:11:53Z")
Hello Nylas team, I need your help to avoid this validation step while connecting a new calendar with Nylas SDK. We also have Microsoft connection which doesnt required any validation step. Google Calendar Integration… --- ## [500 - internal\_error - Error searching for 'code'](https://forums.nylas.com/t/500-internal-error-error-searching-for-code/990)
**Author:** [@randy.wessels](https://forums.nylas.com/u/randy.wessels)\ **Replies:** 1\ **Last updated:** [November 18, 2025, 5:46pm UTC](https://forums.nylas.com/t/500-internal-error-error-searching-for-code/990 "2025-11-18T17:46:12Z")
My organization uses about 20 accounts - each with one or more connectors. Almost all of them work fine. However we are having an issue on one of them where we cannot authorize any new users via the hosted flow. We are g… --- ## [Nylas Microsoft Provider, 45001 error code](https://forums.nylas.com/t/nylas-microsoft-provider-45001-error-code/986)
**Author:** [@Oleksandr](https://forums.nylas.com/u/Oleksandr)\ **Replies:** 5\ **Last updated:** [November 17, 2025, 2:43pm UTC](https://forums.nylas.com/t/nylas-microsoft-provider-45001-error-code/986 "2025-11-17T14:43:50Z")
Hello. An issue has occurred when connecting using Microsoft Provider. Error - 45001 - Provider refused to return refresh\_token using code. URL after redirect to our website: https://WEBSITE?error=provider\_code\_reque… --- ## [Google OAuth "Access blocked: nylas.com has not completed verification" - Test users not working with Hosted Auth](https://forums.nylas.com/t/google-oauth-access-blocked-nylas-com-has-not-completed-verification-test-users-not-working-with-hosted-auth/888)
**Author:** [@connekt](https://forums.nylas.com/u/connekt)\ **Replies:** 3\ **Last updated:** [October 31, 2025, 6:51pm UTC](https://forums.nylas.com/t/google-oauth-access-blocked-nylas-com-has-not-completed-verification-test-users-not-working-with-hosted-auth/888 "2025-10-31T18:51:20Z")
Hi Nylas Team, I’m experiencing an issue with Google OAuth integration using Nylas Hosted Auth where test users are getting blocked even though they’re properly configured in Google Cloud Console. Problem: When using … --- ## [Gmail Grants keep expiring, users claim they made no changes](https://forums.nylas.com/t/gmail-grants-keep-expiring-users-claim-they-made-no-changes/910)
**Author:** [@oskar](https://forums.nylas.com/u/oskar)\ **Replies:** 4\ **Last updated:** [October 30, 2025, 7:34pm UTC](https://forums.nylas.com/t/gmail-grants-keep-expiring-users-claim-they-made-no-changes/910 "2025-10-30T19:34:54Z")
Has anybody else run into this? For some reason, every user we onboard who connects using Gmail over Nylas has their grant expire within a week or two, which has made it impossible for us to roll our functionality out to… --- ## [Error when generating api key](https://forums.nylas.com/t/error-when-generating-api-key/950)
**Author:** [@lee](https://forums.nylas.com/u/lee)\ **Replies:** 2\ **Last updated:** [October 29, 2025, 3:11pm UTC](https://forums.nylas.com/t/error-when-generating-api-key/950 "2025-10-29T15:11:00Z")
I’m getting a fetch error when trying to generate an api key. No api key was shown. I’m on a free plan --- ## [GCP App Domain fields for Nylas Hosted Authentication](https://forums.nylas.com/t/gcp-app-domain-fields-for-nylas-hosted-authentication/931)
**Author:** [@samin-ahsan](https://forums.nylas.com/u/samin-ahsan)\ **Replies:** 4\ **Last updated:** [October 14, 2025, 1:19pm UTC](https://forums.nylas.com/t/gcp-app-domain-fields-for-nylas-hosted-authentication/931 "2025-10-14T13:19:21Z")
I’m going through the process of preparing my Google Cloud Project (GCP) application for Google OAuth Verification. Slide 22 of the Nylas guide, mentions that nylas.com should be added as an authorized domain if using H… --- ## [Microsoft personal account sign in fails on /common and Nylas callback fails after /consumers](https://forums.nylas.com/t/microsoft-personal-account-sign-in-fails-on-common-and-nylas-callback-fails-after-consumers/932)
**Author:** [@agentic](https://forums.nylas.com/u/agentic)\ **Replies:** 1\ **Last updated:** [October 1, 2025, 10:31pm UTC](https://forums.nylas.com/t/microsoft-personal-account-sign-in-fails-on-common-and-nylas-callback-fails-after-consumers/932 "2025-10-01T22:31:52Z")
Hi team, I am integrating Microsoft calendars through Nylas Hosted Auth. Google connects fine. For Microsoft: If the flow hits /common, I get: You cannot sign in here with a personal account. Use your work or school a… --- ## [Migration Issues Regarding Gmail Read Scope Expansion](https://forums.nylas.com/t/migration-issues-regarding-gmail-read-scope-expansion/913)
**Author:** [@Harry](https://forums.nylas.com/u/Harry)\ **Replies:** 3\ **Last updated:** [September 11, 2025, 7:08pm UTC](https://forums.nylas.com/t/migration-issues-regarding-gmail-read-scope-expansion/913 "2025-09-11T19:08:56Z")
Hello Nylas Team, I’m Harry As our service is expanding into CRM functionalities, we now require not only the “gmail.send” permission but also the “gmail.read” permission to fetch our customers’ email content. To handle… --- ## [Nylas API returns "Sorry, you must provide a valid client\_id" error #1](https://forums.nylas.com/t/nylas-api-returns-sorry-you-must-provide-a-valid-client-id-error-1/871)
**Author:** [@saba](https://forums.nylas.com/u/saba)\ **Replies:** 1\ **Last updated:** [August 18, 2025, 7:57pm UTC](https://forums.nylas.com/t/nylas-api-returns-sorry-you-must-provide-a-valid-client-id-error-1/871 "2025-08-18T19:57:52Z")
Hi, I’m trying to connect to the Nylas API working on sandbox environment, but I keep getting this error: { “reason”: “Sorry, you must provide a valid client\_id. The client\_id request parameter should be the Client ID… --- ## [Integration issue of Scheduler Editor Component UI with Bubble](https://forums.nylas.com/t/integration-issue-of-scheduler-editor-component-ui-with-bubble/828)
**Author:** [@aliza.fatimaa](https://forums.nylas.com/u/aliza.fatimaa)\ **Replies:** 2\ **Last updated:** [July 29, 2025, 9:50am UTC](https://forums.nylas.com/t/integration-issue-of-scheduler-editor-component-ui-with-bubble/828 "2025-07-29T09:50:51Z")
Hi everyone, I’m trying to integrate the Nylas Scheduler Editor using the code snippet provided in their documentation. I copied the code as it is and just updated the client ID with mine. The Google authentication flow… --- ## [Get Public Name After Google Signin](https://forums.nylas.com/t/get-public-name-after-google-signin/522)
**Author:** [@mingzew](https://forums.nylas.com/u/mingzew)\ **Replies:** 2\ **Last updated:** [January 15, 2025, 6:57pm UTC](https://forums.nylas.com/t/get-public-name-after-google-signin/522 "2025-01-15T18:57:35Z")
I am using the hosted authentication and I’d like to get the public username after google signin. I’ve used this method mentioned in another post However, the decoded JWT token doesn’t have any name field nor picture … --- ## [Nylas authentication workflows](https://forums.nylas.com/t/nylas-authentication-workflows/545)
**Author:** [@AbdulrahmanSalim](https://forums.nylas.com/u/AbdulrahmanSalim)\ **Replies:** 1\ **Last updated:** [January 15, 2025, 6:20pm UTC](https://forums.nylas.com/t/nylas-authentication-workflows/545 "2025-01-15T18:20:12Z")
I am having a security concern regarding to the authentication workflows provided by Nylas. If I decide to use the OAuth and the API key method, then the developers will have access to users data (emails, calendars and e… --- ## [Regarding auth flow of email and scheduler](https://forums.nylas.com/t/regarding-auth-flow-of-email-and-scheduler/365)
**Author:** [@dhruv](https://forums.nylas.com/u/dhruv)\ **Replies:** 21\ **Last updated:** [October 19, 2024, 5:36am UTC](https://forums.nylas.com/t/regarding-auth-flow-of-email-and-scheduler/365 "2024-10-19T05:36:42Z")
Suppose i have authenticated my email through nylas authentication so is there any way to authenticate nylas meeting scheduler using same email (instead of doing multiple api call for auth) for example : const s… --- ## [Get information about grand in Nylas v3](https://forums.nylas.com/t/get-information-about-grand-in-nylas-v3/464)
**Author:** [@Kateryna](https://forums.nylas.com/u/Kateryna)\ **Replies:** 1\ **Last updated:** [September 26, 2024, 11:17am UTC](https://forums.nylas.com/t/get-information-about-grand-in-nylas-v3/464 "2024-09-26T11:17:31Z")
I need to check the status with Grants. And get info valid or invalid --- ## [Get a list of events calendar error 404 Not Found](https://forums.nylas.com/t/get-a-list-of-events-calendar-error-404-not-found/459)
**Author:** [@Kateryna](https://forums.nylas.com/u/Kateryna)\ **Replies:** 1\ **Last updated:** [September 23, 2024, 11:59am UTC](https://forums.nylas.com/t/get-a-list-of-events-calendar-error-404-not-found/459 "2024-09-23T11:59:33Z")
Hello, help me fix error with api this Api doesnt work this Api works why I get error when I run this API https://api.us.nylas.com/v3/grants/${accessToken}/events?calendar\_id=${params.calendar\_id}&start=${params.… --- ## [Querying Grants](https://forums.nylas.com/t/querying-grants/456)
**Author:** [@sboynton](https://forums.nylas.com/u/sboynton)\ **Replies:** 1\ **Last updated:** [September 19, 2024, 12:17am UTC](https://forums.nylas.com/t/querying-grants/456 "2024-09-19T00:17:44Z")
I have a list of grant\_ids stored on my system, and I was hoping to get fresh grant info from Nylas in a request like so: Nylas v3 Administration API docs | Nylas Docs However, I’m not seeing any way possible to use my g… --- ## [ERROR 45001 How to resolve](https://forums.nylas.com/t/error-45001-how-to-resolve/408)
**Author:** [@lcscamacho](https://forums.nylas.com/u/lcscamacho)\ **Replies:** 15\ **Last updated:** [September 18, 2024, 9:00am UTC](https://forums.nylas.com/t/error-45001-how-to-resolve/408 "2024-09-18T09:00:59Z")
How to resolve error: provider\_code\_request\_failed 45001 400 Provider refused to return refresh\_token using code (hosted auth) Provider??? no have solution --- ## [How to generate the OAuth URL](https://forums.nylas.com/t/how-to-generate-the-oauth-url/431)
**Author:** [@hamzahyounus](https://forums.nylas.com/u/hamzahyounus)\ **Replies:** 12\ **Last updated:** [September 10, 2024, 1:04pm UTC](https://forums.nylas.com/t/how-to-generate-the-oauth-url/431 "2024-09-10T13:04:16Z")
Hello, all. I am new to Nylas. I am trying to integrate Nylas with my vue 3 app. First of all, I don’t know how to generate the OAuth URL --- ## [Can you help me with integration Nylas v2 on Nylas v3](https://forums.nylas.com/t/can-you-help-me-with-integration-nylas-v2-on-nylas-v3/412)
**Author:** [@Kateryna](https://forums.nylas.com/u/Kateryna)\ **Replies:** 3\ **Last updated:** [September 6, 2024, 11:02am UTC](https://forums.nylas.com/t/can-you-help-me-with-integration-nylas-v2-on-nylas-v3/412 "2024-09-06T11:02:49Z")
I realised this step but it doesnt work and I get issue 400: redirect\_uri\_mismatch [Next page](https://forums.nylas.com/tag/authentication/3.md?match_all_tags=true&page=1&tags%5B%5D=authentication)