Is Office Having Ms Project 2021 Problems? Here Is the Fix

When Office stops working as expected, start with the shortest official checks before you reinstall anything.

Problem Description: Ms Project 2021 Glitches

I just purchased MS Project 2021 and started a project tasks. I have input tasks, durations, dependencies and resources. I asked it NOT to level resources. I set the project to auto calculate from finish date. When I calculate the project, for some reason I keep getting random dates that change from 2026 to the same date in 2126. I can't figure out how to stop it.

Quick Answer for Office Won't Complete Task

To resolve scheduling discrepancies in MS Project 2021, navigate to Tools > Options > Calculation tab and set the calculation mode to Automatic so tasks update in real time.

Likely Causes Behind Common Office Performance Issues Triggers

• The Microsoft account or license context may not match the purchase or device.

• Cached credentials, outdated builds, or damaged local components can trigger office performance issues.

• A file-specific corruption or add-in conflict can mimic a broader application failure.

Recommended Solution: Fixing Office Performance Issues Step by Step

When to use this: Apply these steps when the symptoms match and you can access the relevant Microsoft account or administrator.

1. Verify that both the project Start Date and Finish Date are accurately configured, as an incorrect base date directly causes unexpected scheduling outcomes.

2. Carefully review all applied task constraints, specifically avoiding As Late As Possible (ALAP) when scheduling backward from the Finish Date, since this forces tasks to shift later than intended.

3. Additionally, verify that resource leveling configurations are properly adjusted or disabled if not required.

4. Implementing these configuration checks will align your project timeline with expected dates and eliminate automatic calculation errors.

Alternative Solutions for Broader Office Performance Issues Workarounds

1. Retry the Microsoft-side steps after restarting the app and device.

2. Test the same action in a private browser session or a new blank file to isolate account vs file issues.

3. Run Quick Repair, then Online Repair from Programs and Features if the app still fails.

4. Capture exact error text and screenshots before contacting Microsoft Support or your administrator.

Working with WPS Office: Using WPS While Office Is Unavailable

WPS Office cannot replace Microsoft account, activation, or cloud fixes for this scenario. It remains one of the best free Microsoft Office-compatible alternatives for opening and editing local files.

1. Download and install WPS Office from the official website.

2. Open local Word, Excel, PowerPoint, or PDF files in the matching WPS app.

3. Save a working copy locally while Microsoft-side issues are resolved.

4. Return to Microsoft Office after the primary fix succeeds.

If you need a practical local workspace in the meantime, try WPS Office.

Prevention Tips for Avoiding Repeat Office Performance Issues

• Keep one primary Microsoft account for subscriptions and Office sign-in.

• Install updates for Office and Windows before retrying failed workflows.

• Back up important files before repair, reset, or reinstall actions.

• Document exact error messages before the next troubleshooting attempt.

FAQs About Ms Troubleshooting FAQ

Can WPS Office fix this office performance issues issue directly? Only when the WPS steps match the formatting or file task. Account, activation, and cloud issues stay on the Microsoft side.

Should I reinstall Office before trying these steps? Not first. Confirm account, license, and the exact error before reinstalling.

What should I send to Microsoft Support? The affected account email, device type, Office version, exact error text, and screenshots with personal data hidden.