Why Is Office 365 Slow? How to Fix the Issue on Windows 11/10?

Are you frustrated by the “Office 365 slow” issue on your computer? When you work, your productivity may be lower due to the issue. Office 365 slow performance issues can have some causes. The following lists some:

• Out-of-date Windows or Office installations
• Insufficient hardware resources
• Background processes or applications
• Network or internet connection issues
• Microsoft server issues
• Slow Internet connection
• Many add-ins installed

MiniTool ShadowMaker TrialClick to Download100%Clean & Safe

To fix the “Office 365 slow” issue, follow the steps below.

What Is Office LTSC 2021? How to Free Download and Install It?

What is Office LTSC 2021? What are the differences between it and Office 2021? How to download and install Office 2021? Here are the answers.

Read More

Fix 1: Check the Internet Connection

The “Office 365 slow” issue might occur due to the connection of the Internet. Hence, you should check if something is going wrong with your Internet connection when encountering the error. To check the errors with network configuration, you can run the Windows Network Diagnostics utility. During the running process, it troubleshoots issues and detects errors.

Windows 11 Setup Without Internet – Here Is a Full Guide!

If your Internet is down when setting up Windows 11, what should you do? How to install or set up Windows 11 without Internet? Here is a full guide for you.

Read More

Fix 2: Update Windows and Office 365

You can also choose to update your Windows system and your Office 365 software.

Update Windows:

Step 1. Press the Windows + I keys together to Open Settings.

Step 2. Go to Updates & Security > Windows Update> Check for updates. Then Windows will search for available updates. Just follow the on-screen instructions to finish the process.

Update Office 365:

Step 1: Open any Office app like Word and create a new Word document.

Step 2: Click File > Account.

Step 3: Under Product Information, you can click Update Options and choose Update Now to check and install Microsoft Office updates.

Fix 3: Disable Unused Add-ins

The unused add-ins can cause various issues like Microsoft Office 365 running slow. You can follow the below instructions to disable the add-ins.

Step 1: Open your Office 365 application. Here, we take Word as an example.

Step 2: Go to File > Options. In the Word Options window, find and click Add-ins.

Step 3: Then, click Go….

Step 4: In the next window, uncheck the unused items and click OK.

Also see: Why Is My Excel Running Slow? How to Fix Excel Slow? Solved

Fix 4: Repair Office 365

Microsoft provides an effective built-in quick repair tool to repair Office. Therefore, you can follow the steps below to repair Office to fix the Microsoft something went wrong 2400 issue.

Step 1. Type Control Panel in the Search box.

Step 2: Click the Uninstall a program button under Programs.

Step 3: Find and right-click the Office application to select Change.

Step 4: Choose Quick Repair or Online Repair based on your situation according to the on-screen instructions.

Step 5: Follow the instructions on your computer to finish this task.

Microsoft Office Repair Tool | Repair an Office Application

Some free Office repair tools are provided to help you repair Microsoft Office or Microsoft 365 applications and repair corrupted Office files on Windows 10/11.

Read More

Fix 5: Run the Disk Cleanup Tool

A full hard drive can also cause the “Office 365 slow” issue. Thus, you should clean up the hard drive, which can help your PC get great performance. You can follow the steps below to clean up your hard drive:

Step 1: Type disk cleanup in the Search box and choose Disk Clean-up from the best match.

Step 2: In the pop-up window, the system drive is selected by default. You need to click OK to continue.

Step 3: Then, you will see how much disk space you can get in total by deleting all files listed in the box, including:

• Windows Upgrade Log Files.
• Setup Log File.
• Downloaded Program Files.
• Temporary Internet Files.
• System archived/queued Windows Error Reporting.
• Delivery Optimization Files.
• Recycle Bin.
• Temporary Windows Installation Files.
• Previous Windows installation(s).

Step 4: Now, select the file types you want to delete and click the OK button.

Step 5: Now, you need to click Delete Files to confirm that you want to permanently delete these files.

Final Words

These are common fixes to solve the “Office 365 slow” issue. If you are bothered by this error, go to follow these methods to get rid of the trouble. Besides, you can back up your important data regularly.