I am recently getting the following warning recently with my Azure devops builds
Property ‘sonar.jacoco.reportPaths’ is deprecated (JaCoCo binary format). ‘sonar.coverage.jacoco.xmlReportPaths’ should be used instead (JaCoCo XML format).
Current Maven (and also Gradle) tasks suffer from using the deprecated (and now removed starting from SonarJava 6.0) old jacoco.ReportPaths property. This is still in Pull Request on Microsoft side, so we have no ETA to give concerning a fix.
In the meantime, you can add the new property into the additional properties field of the Prepare Analysis configuration task, it should be working.