# No usage of ADAL in the tenant
Microsoft ended support and security fixes for ADAL on June 30, 2023.
Source: https://maester.dev/docs/tests/ZTA.21780
## Overview
Microsoft ended support and security fixes for ADAL on June 30, 2023. Continued ADAL usage bypasses modern security protections available only in MSAL, including Conditional Access enforcement, Continuous Access Evaluation (CAE), and advanced token protection. ADAL applications create security vulnerabilities by using weaker legacy authentication patterns, often calling deprecated Azure AD Graph endpoints, and preventing adoption of hardened authentication flows that could mitigate future security advisories.
## Remediation
- [Migrate applications to the Microsoft Authentication Library (MSAL)](https://learn.microsoft.com/entra/identity-platform/msal-migration?wt.mc_id=zerotrustrecommendations_automation_content_cnl_csasci)
## Run it
The check runs as part of the whole assessment, with the ZeroTrustAssessment module installed:
```powershell
Install-Module ZeroTrustAssessment -Scope CurrentUser
Connect-Maester
Invoke-Maester -Pack ZTA -SkipBuiltIn
```
Leave out `-SkipBuiltIn` to run Maester's own checks in the same run.
About this check
| | |
| --- | --- |
| Severity | Medium |
| Effort to fix | High |
| Impact on users | Low |
| Pillar | Identity |
| Category | Application management |
| Product | [Entra ID](/docs/tests/products/entra) |
| Feature | Applications |
| Area | Applications and workload identities |
| ATT&CK | [T1078.004](/docs/tests?mitre=T1078.004) Cloud Accounts |
| Licence | Free |
| Tenant | Workforce, External |
Product, feature, area and ATT&CK are Maester's: the assessment does not record them, so Maester keeps them in the pack's `taxonomy.json`.