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Cannot connect to a database because of SSLHandshakeException

Due to Java security policy, the usage of TLS 1.0 and TLS 1.1 protocols was disabled. This Java update caused the javax.net.ssl.SSLHandshakeException error that occurred when you tried to connect to old servers that still accept these protocols.

As a fix, you can explicitly enable these protocols. Note that it might result in vulnerability issues. Consider using newer versions of TLS.

  1. In the Database tool window (View | Tool Windows | Database), click the Data Source Properties icon The Data Source Properties icon.

  2. Select a data source for which you want to enable disabled algorithms (for example, MySQL 8.0.3). The following required algorithms might be disabled: SSLv3, TLSv1, TLSv1.1, RC4, DES, MD5withRSA, DH keySize < 1024, EC keySize < 224, 3DES_EDE_CBC, anon, NULL, include jdk.disabled.namedCurves.

  3. In the right pane of a data source, click Test Connection.

  4. In the notification, select an action that you want to perform. You can select among the following actions:

    • Edit disabled algorithms: opens the Advanced tab of the selected data source and moves the focus to the VM options field. In the VM options field, you can edit a list of disabled algorithms manually (for the Djdk.tls.disabledAlgorithms option).

    • Enable TLSv1: removes TLSv1 from the Djdk.tls.disabledAlgorithms option. This action will enable TLS 1.0.

    • Enable TLSv1.1: removes TLSv1.1 from the Djdk.tls.disabledAlgorithms option. This action will enable TLS 1.1.

    • Enable all protocols in JDBC driver: removes SSLv3, TLSv1, TLSv1.1, RC4, DES, MD5withRSA, DH keySize < 1024, EC keySize < 224, 3DES_EDE_CBC, anon, NULL, include jdk.disabled.namedCurves from the Djdk.tls.disabledAlgorithms option. This action enables all the disabled algorithms.

  5. Click Test Connection and see if the fix works.

    You can try Enable TLSv1 and Enable TLSv1.1 first. If the error still occurs, try to enable other algorithms.

    javax.net.ssl.SSLHandshakeException
Last modified: 16 August 2021