While trying to upgrade Service Management using the installer, the process failed, after deleting most of the Jira directory. The Windows Service was also removed as part of the process.
I am now trying to unzip the backup file to restore the Jira directory to its previous state, and I have 2 issues:
1) I cannot copy UserSearchServiceStatsData$Optimised$FindTopUsersInternal$FindTopUsersWithPermissionInIssueFromGroups$FindTopUsersWithNameInGroups$QueryDslJiraCrowdDAOSettings.class to its original location due to the file path being too long. This was zipped in place, and worked with this exact length previously.
2) The Windows service is missing, and I do not know how to reinstall just the service, oir repair the installation effectively.