Edit the name of existing sprint in Azure DevOps?
First Method
If you are using the new navigation go to your
Select "Project settings" in the Lower left corner of the project View.
Project-settings -> Boards -> Project configuration -> 'Iterations'
Now you should see your iterations. Right-click the iteration To Edit.
Second Method
Boards -> Sprints -> Click Date-range
above the Sprint name near the upper right side of the screen to edit the name of the current sprit
You can do that in following way:
Click on Project-settings ==> Boards ==> Project configuration ==> Iterations
See the screen shot for better clarity.
Alternative Way:
You can also do it by simply following steps:
Boards ==> Sprints ==> Set Dates (Fill out date range here)
See the screen shot for better clarity:
Hope that would help