This is not about reports created with Matrix data region, so no column headers. And this may not relevant to latest version such as Reporting Services 2014 and 2016. While troubleshooting a report hosted in SSRS 2008 R2, I was trying to address an issue related to repeating headers on a particular report. It was a simple report, created using a Table data region and no groups. Repeating headers had been addressed as follows;
Although it has required settings done for getting headers repeated, it was not working as expected. Unfortunately, all my searches showed posts related to Matrix, not for Table, hence could not find the solution easily. Luckily, I was guided by another person, instructed me to add some elements to rdl file manually, just like below.
It started working immediately. What is the reason? As per the research done, this issue comes when the Table has not been added through the Wizard but manually. If it was created using the Wizard, above setting is enough for getting headers repeated.
I will be checking this with latest version and updating the same soon.