During initial installation of a subversion repository server you may run into issues with authentication methods. This issue is probably related to not having a package installed that needs to be for your authentication to function properly.
Error Received in TortoiseSVN: Could not obtain a list of SASL mechanisms
You may receive an error similar to the one below stating that SVN cannot negotiate the authentication mechanism during initial installation of Subversion. I received the below error when I was testing a new SVN repository I had set up on a CentOS Linux server and was attempting to checkout the repo from another CentOS Linux server. Below I describe basic configuration and what was done to move pas this error.
Error:
svn: Cannot negotiate authentication mechanism