When new documents are uploaded into the portal, the indexer needs to be run in order to index the file. On the server under the Task Scheduler is a scheduled task that runs the dtSearch indexer.
- Check to make sure the indexer is set to run nightly.
- Check to make sure the user set to run the indexer is the portal impersonated user.
- Check to make sure that the indexer is set to run whether user is logged on or not and that do not store password is not checked.