--- title: Issues Adding A New User Using SSO - Microsoft Error AADSTS50105 description: Learn how to resolve common Single Sign-On (SSO) login issues in Clearooms, including user access problems related to Office 365 group permissions. --- [Skip to content](https://knowledgebase.clearooms.com/issues-adding-a-new-user-using-sso-microsoft-error-aadsts50105#main-content) ![Colour Transparent](https://knowledgebase.clearooms.com/hs-fs/hubfs/Colour%20Transparent.png?width=1672&height=313&name=Colour%20Transparent.png) Open main navigation Close main navigation - [Contact us](https://2feg9n.share-eu1.hsforms.com/2LEUbrOfJTIe01qcEQusU5w) [Contact us](https://2feg9n.share-eu1.hsforms.com/2LEUbrOfJTIe01qcEQusU5w) How can we help you? - There are no suggestions because the search field is empty. 1. [Knowledge Base](https://knowledgebase.clearooms.com/?hsLang=en-gb) 2. [Security](https://knowledgebase.clearooms.com/security?hsLang=en-gb) 3. [SSO, SCIM Apps & Integrations](https://knowledgebase.clearooms.com/security?hsLang=en-gb#sso-scim-apps-integrations) # Issues Adding A New User Using SSO - Microsoft Error AADSTS50105 ## Troubleshooting SSO Access and Permissions ### **SSO login issues** Once SSO is set up, users can log in by authenticating via Microsoft Account. With SSO enabled, access to Clearooms is controlled from your own Office 365, usually (but not always) via Group policies. If you have a user who sees this message (see screenshot below) this is due to them not having the correct access, often this is due to them not being in the correct group in Office 365 within the active directory. 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