Understanding Office 365 & SP2013 Search Extensions
I found this nice chart that details the file types/extensions that default SharePoint 2013 and Office 365 will index. The “FH” column indicates the important content indexing. If it is not marked as “FH”, then you are limited to searching by the name, location, file type, date or other metadata. Mike Smith’s blog closes with a nice link that details the process for implementing a custom iFilter to index specific file types. From a discovery perspective, I always want to confirm the exact list of iFilters that some helpful admin may have added or removed. Here is a link to the get that list. Too many times I have been debugging a strange search behavior only to find out that the system was ‘tuned’ to optimize performance over search retrieval.