ID: 15815 Title: LDAP connection ids that are invalid user ids will no longer crash Checkmk Component: Setup Level: 1 Class: Bug fix Version: 2.3.0b1 LDAP connection names have the same requirements as user ids and Checkmk version 2.2.0 introduced stricter requirements for them. Up until now, Checkmk did not check these requirements when creating new LDAP connections nor did an update convert them to fit the new requirements. This Werk tightens LDAP connection id validation to fit the new requirements. Updating Checkmk will cause all spaces in connection ids to be replaced with underscores, as this is the most common manifestation of this incompetability. If you still are unable to update, please check if your connection id consist only of letters, digits, dollar, underscore, dash, dot, and at and starts with a letter, digit, dollar, or underscore. If not, rename your connection id before updating.