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How to Fix Project for the Web Changing Percent Complete to 100%

Maira MehtabMaira Mehtab Oct 22, 2026 868 views

Question details

The user is experiencing an issue where task progress percentages are automatically changed to 100% instead of retaining the entered partial value.

How to Fix Project for the Web Changing Percent Complete to 100%
Product
Microsoft Project for the Web
Device & OS
not provided
Scenario
Updating task progress and managing percent complete values for ongoing project tasks.
Observed behavior
When a user enters a partial task progress value, such as 25% or 75%, the system automatically changes the value to 100% and marks the task as complete.
Before you start

Ensure you have access to the Assignments view in Project for the Web and check if you have the Microsoft Project desktop application installed for advanced editing options.

Solution 1Recommended

Adjust Planned Effort in the Assignments View

Project for the web automatically marks tasks as 100% complete if there is no planned effort remaining on future dates. Adjusting this effort prevents auto-completion.

In Project for the web, task completion is heavily tied to planned effort. If the system detects that all planned effort has been completed and there are no scheduled hours for future days, it assumes the task is entirely finished, regardless of the manual percentage you try to input.

1
Open the Assignments View

Navigate to your project in Project for the web and switch to the Assignments view to see a detailed breakdown of tasks.

2
Check Timescaled Effort

Review the timescaled planned effort for the specific task that keeps changing to 100%.

3
Add Future Planned Effort

If the task is not actually complete, ensure that planned effort is added or extended into future dates. This prevents the system from automatically assuming the task is finished.

Adjust Planned Effort in the Assignments View
Automatic Calculation: Removing all planned effort from later days will immediately trigger Project for the web to change the task progress to 100%.
Free Microsoft Office alternative

Track Your Projects Effectively with WPS Office

While Microsoft Project offers advanced enterprise tools, it can sometimes force complex automated calculations. WPS Office provides a lightweight, completely free alternative. You can easily manage project tasks, track progress percentages manually without unexpected overrides, and collaborate using WPS Spreadsheet's built-in Gantt chart templates.

  1. 1. Install WPS Office: Download and install the free WPS Office suite on your device.
  2. 2. Open WPS Spreadsheet: Launch WPS Spreadsheet to begin setting up your task and project tracker.
  3. 3. Choose a Project Template: Click 'New' and search the built-in template library for 'Project Tracking' or 'Gantt Chart'.
  4. 4. Track Progress Manually: Input your tasks and manually update the percent complete column exactly as you need it.
Easily track task completion percentages manually without unexpected automatic overrides.High compatibility with Microsoft Excel (.xlsx) formats for seamless project sharing and collaboration.Access hundreds of free project management and Gantt chart templates to get started quickly.Lightweight, fast, and completely free to use on Windows, Mac, and Linux.
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Frequently Asked Questions

Why does Project for the web automatically mark tasks as 100% complete?

Project for the web calculates task progress based on allocated effort. If all planned effort is marked as completed and no future effort is scheduled on the timeline, the system automatically assumes the task is finished and forces the progress to 100%.

Can I manually type a specific percentage like 35% in Project for the web?

Manual percentage entry can be limited or overwritten in Project for the web depending on your effort allocation. To strictly enforce a manual percentage without automatic recalculation, you may need to edit the task using the Microsoft Project desktop application.

How do I stop tasks from auto-completing when I update progress?

To prevent auto-completion, ensure that you have planned effort allocated for future dates in the Assignments view. If the system sees that future effort remains, it will accept partial progress updates (like 50%) without forcing the task to 100%.