In MOSS 2007 each Shared Services Provider has a single content index. Meaning that all content stored across the various content sources is referenced from a single index. This improves administration functions when you work with multiple content sources. When you make major changes to content sources and search settings or if you notice a large number of errors in search event logs, you may be required to reset the content index for your SharePoint environment. After this has been completed you need to manually initiate a Full Crawl of various content sources to repopulate the content index. If you do not rebuild the content index, search will be unable to work because the index will be empty.
How to reset all crawled content:
- Go to your Shared Services Administration site of your SharePoint environment and select Search Settings.
- Then select Reset All Crawled Content.
- Leave the checkbox to deactivate all search alerts during the reset (see below image). This will avoid any unnecessary alerts being sent to users of the system during this update.
- Once completed be sure to perform a Full Crawl to repopulate the content.