Get an error when typing into the Predecessor Column in MS Project

Hi @Kyle Sadowski

Just a quick note, I am a fellow user and do not represent or work for Microsoft. My suggestions are based on publicly available information and personal experience using the product.

To better understand why you're unable to enter data in the Predecessors column, could you clarify a few things?

• What is the exact error message you receive when you try to enter a predecessor?
• Are you able to edit other fields, such as Task Name, Duration, or Start Date?
• Does this happen with all tasks or only specific tasks?
• Are you trying to enter a predecessor for a main task that contains several subtasks, or for an individual task?

In the meantime, please try this alternative method:

• Select the task you want to edit.
• Press Shift + F2 (or double-click the task) to open the Task Information dialog.
• Select the Predecessors tab.
• Try entering the predecessor task ID and click OK.

Also, check whether the project is opened in Read-Only mode.

Please let me know what happens when you try these steps, particularly whether you receive the same error message.