> ## Documentation Index
> Fetch the complete documentation index at: https://docs.thinkplatform.ai/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Choose User guide for browser tasks, Developers for CLI, SDK and external agents, and Administration for organization management.
> Confirm identity and organization/project context before operations. Documentation access does not grant ThinkPlatform permissions.
> Review side effects, verify changes with a read, and do not blindly retry an operation with an uncertain outcome.
> Use documented UI steps for the web app and documented public CLI or SDK interfaces for automation. Follow each page’s prerequisites and authentication requirements.

# Sign in

> Access ThinkPlatform with your organization's account.

Sign in through your organization's Microsoft Entra account to use ThinkPlatform in your browser.

## Before you begin

Have your organization's ThinkPlatform address and an account in its Entra tenant. Tenant members can sign in without a ThinkPlatform administrator registering each person first. Project visibility and permission to perform operations are separate.

## Sign in

1. Open the ThinkPlatform address supplied by your organization.
2. Follow the sign-in prompt and authenticate with your organizational account. Complete any verification required by your organization.
3. Once signed in, select the organization and project for your work.

## Verify and troubleshoot

Check that the selected organization and project are correct. If sign-in fails, check the account and the message shown by your identity provider; contact your organization's administrator if you cannot complete authentication. If you can sign in but cannot see a project, ask its administrator about membership and access. See [Access and errors](https://docs.thinkplatform.ai/guides/troubleshooting/access-and-errors.md).


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