Troubleshooting
From Sage CRM Knowledge Base
1. CRM Indexor service not indexing
This uses a folder in the library called Sage\CRM\CRM71a\Library\FullText.ix If you delete this folder and restart the “CRM Indexer service” this should repopulate and correct the issue Ref: https://community.sagecrm.com/user_community/f/84/p/5514/13711.aspx#13711