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The fulltext filter daemon host (FDHost) process has stopped abnormally. This can occur if an incorrectly configured or malfunctioning linguistic component, such as a wordbreaker, stemmer or filter has caused an irrecoverable error during full-text indexing or query processing. The process will be restarted automatically.
Typically, the daemon will recover from the error. If it is consistently failing, troubleshooting is necessary. Try the following to isolate the issue:
If a new linguistic component has been installed recently, remove it from the system.
Look at the crawl log to identify any new document that failed to be full-text indexed, and remove it.