url: /setup/upgrade-notes/
---
+## Release 7.9.4 LTS Upgrade Notes
+**Additional SAML checks**
+SAML authentication adds additional checks for validating SAML responses from the identity provider. This could reveal a non-standard configuration that needs to be updated. Information will appear in the logs upon a failed login attempt in the event that the configuration needs to be tweaked.
+
+[Full Release Notes](https://jira.sonarsource.com/secure/ReleaseNote.jspa?projectId=10930&version=15832)
+
## Release 7.9.1 LTS Upgrade Notes
**Upgrade on Microsoft SQL Server fixed**
Upgrade failure and performance issues with Microsoft SQL Server have been fixed ([SONAR-12260](https://jira.sonarsource.com/browse/SONAR-12260), [SONAR-12251](https://jira.sonarsource.com/browse/SONAR-12251)).
[Full Release Notes](https://jira.sonarsource.com/secure/ReleaseNote.jspa?projectId=10930&version=15029)
-
## Release 7.9 LTS Upgrade Notes
**Upgrade can fail on Microsoft SQL Server**
Migration from SonarQube v6.7.x to v7.9 fails on Microsoft SQL Server ([SONAR-12260](https://jira.sonarsource.com/browse/SONAR-12260)).
[Full Release Notes](https://jira.sonarsource.com/secure/ReleaseNote.jspa?projectId=10930&version=14945)
-
## Release 7.8 Upgrade Notes
**MySQL Deprecation and Migration**
This is the last version that will support MySQL. To migrate from MySQL to a supported database, see the free [MySQL Migrator tool](https://github.com/SonarSource/mysql-migrator).