unknown protocol c

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Platform Notice: Server and Data Center Only - This article only applies to Atlassian products on the server and data center platforms.


When configuring SSL in server.xml, the following appears in the catalina.out:

30-Jun-2016 15:21:23.577 SEVERE [main] org.apache.coyote.AbstractProtocol.init Failed to initialize end point associated with ProtocolHandler ["http-nio-443"] unknown protocol: c


The keystoreFile configuration in the connector is misconfigured. There are two possible causes:

  1. / slash has been used instead of a \ slash
  2. The keystoreFile path is incorrect


Depending on the cause from above, there are different solutions. Both involve changes to the server.xml located in <BITBUCKET_HOME>/shared:

  1. Change all / to \ in the path for keystoreFile
  2. Check that the keystore path set in keystoreFile points to the correct location

Bitbucket Server 5.0

As of Bitbucket Server 5.0, you can't configure any Tomcat connectors directly, therefore the configurations in this section only apply for Bitbucket server 4.14 or earlier.

server.xml configurations have been replaced by <Bitbucket home directory>/shared/

The keystoreFile attribute has been replaced by ssl.key-store.

Last modified on Nov 2, 2018

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