Any ways to find past week blocking session Any query to find past week blocking session in SQL server or blocking session which happen 2 weeks ago? Thanks
Unless you are collecting the data in some way (monitoring tool, etc), you aren't going to be able to find the blocking session from a week ago or any time in the past.

Start collecting current activity to a table using sp_WhoIsActive. You can use this method to do it (I wrote the post).