hi i am having some issue in MS project progress update of fixed duration task

chinthala91 

Sorry, I thought I saw a 50% entry in percent complete on your screen shot. Perhaps I inadvertently looked at the screen shot in your original post that does show the 50% value. At any rate, I don't know why the process I outlined is not working for you. Every time I run a simulation of your plan under various conditions, I get this same basic result.

Before hitting "OK":

After hitting "OK", this is the result:

You are apparently using a 7 day workweek as your project calendar but I see there is a task calendar applied to the "slab formwork" task. What is that task calendar?

It appears you have 6 work type resources assigned to the task (i.e. Form work resource at 600%). Instead of trying to track progress with duration, actual duration and remaining duration (which seems to be "wrapping you around the axle"), why not focus on what really matters, the amount of work accomplished (as of the status date) compared to what was originally planned. For a 7 day duration task with a 600% group resource assigned, that equates to 7x6x8=336 hours (assuming a normal 8 hour workday 7 days a week, or equivalent thereof). So the question is, how much work has been accomplished since the early start date of 6/5/24 and is the remaining work still the 336 hours minus actual work to date or will it take more work to finish the task, in which case the remaining work may need to be adjusted. Project will calculate percent work complete based on those inputs.

John