A mechanism is provided for reparsing unsuccessfully parsed event data. Responsive to determining that one or more unsuccessfully parsed event data items exist for a log source, each unsuccessfully parsed event data item of the one or more unsuccessfully parsed event data items is reparsing using an updated device support module associated with the log source. Responsive to the device support module successfully reparsing the unsuccessfully parsed event data item thereby forming a successfully parsed event data item, the successfully parsed event data item is added to a historical record of events associated with the log source. Responsive to the device support module failing to successfully reparse the unsuccessfully parsed event data item, the unsuccessfully parsed event data item is retained in an unsuccessfully parsed event data item data structure.