Fix Outlook not responding on Windows 10/11?

fix ms outlook not responding error

Outlook not reponding or Outlook freezes when sending mail

Microsoft Outlook not responding on Windows 10 or even on Win 11 computer, is a common and frustrating issue that many users encounter. Outlook plays a pivotal role in our digital lives, serving as our go-to platform for emails, calendars, and contacts. When it becomes unresponsive, it can disrupt our workflow and communication.

outlook stopped working

In this comprehensive guide, we will address this issue head-on, providing you with practical solutions to get your Outlook back on track. From troubleshooting steps to more advanced techniques, we aim to empower you to resolve this problem and restore the seamless functionality of this essential tool in your daily work and communication.

Why does Microsoft Outlook Stop Responding on Windows 10/11?

When Microsoft Outlook is labeled as “not responding,” it signifies that the application has become unresponsive to user commands. In essence, you click on Outlook, and it fails to open or becomes stuck during use. This frustrating situation can lead to delays in accessing emails, calendars, and other vital information, impacting both personal and professional responsibilities.

Several factors can contribute to Outlook not responding on Windows:

  • Software Conflicts: Conflicts between Outlook and other installed software can disrupt its normal operation. This might occur due to incompatible add-ins or conflicting applications.
  • Corrupted User Profile: Over time, user profiles can become corrupted, leading to issues in Outlook. Corruption can result from sudden power loss, improper shutdowns, or software glitches.
  • Excessive Add-Ins: Outlook allows users to install various add-ins for added functionality. However, an excessive number of add-ins can overwhelm Outlook, causing it to freeze or crash.
  • Large Data Files: Large email archives, extensive contacts, or oversized PST/OST files can strain Outlook’s resources, causing it to become unresponsive.

Understanding these potential reasons behind Outlook’s unresponsiveness is the first step in resolving the issue effectively. In the following sections, we will explore step-by-step solutions to tackle each of these problems, helping you restore Outlook’s functionality and regain control of your email and productivity.

Step-by-Step Guide to Fix Microsoft Outlook not responding error

Encountering the frustration of Microsoft Outlook not responding on Windows 10 can be disheartening, but often, a step-by-step guide can help alleviate the issue. Here’s a quick checklist to follow when you face this problem:

Step 1: Close Unresponsive Outlook

If Outlook is not responding, the first step is to close the application. You can do this by right-clicking the Outlook icon in the taskbar and selecting “Close Window.

close outlook window

Step 2: Restart Outlook in Safe Mode

To check if problematic add-ins are causing the issue, restart Outlook in Safe Mode. You can do this by pressing the “Windows + R” keys, typing “outlook.exe /safe” (without quotes), and pressing Enter.

start outlook in safe mode

In Safe Mode, Outlook will disable all add-ins. If Outlook opens without issues in Safe Mode, it indicates that an add-in may be the culprit.

Step 3: Disable Problematic Add-Ins

To identify the problematic add-in, go to “File > Options > Add-Ins” in Outlook.

outlook addins

In the Add-Ins window, disable all add-ins and then enable them one by one while checking if Outlook responds. When you find the add-in causing the problem, disable it permanently.

Step 4: Repair Microsoft Office

If disabling add-ins doesn’t resolve the issue, repair your Microsoft Office installation.

Go to “Control Panel > Programs > Programs and Features.”
Find “Microsoft Office” in the list, right-click it, and select “Change.
Choose “Repair” and follow the on-screen instructions to repair Office.

repair ms office

Step 5: Create a New Outlook Profile

If the problem persists, your Outlook profile might be corrupted.

Open “Control Panel” and search for “Mail.
In the Mail Setup window, click “Show Profiles.”
Select your current profile and click “Remove.
Click “Add” to create a new profile. Follow the prompts to set up your email accounts.

create outlook profile

Step 6: Check for Windows Updates

Ensure your Windows 10 operating system is up to date. Go to “Settings > Update & Security > Windows Update” and check for updates.

check for updates

Step 7: Disable Hardware Graphics Acceleration

Graphics acceleration can sometimes cause issues with Outlook. Disable it by going to “File > Options > Advanced” and check “Disable hardware graphics acceleration.

hardware graphics acceleration

Step 8: Run Outlook Diagnostics

Microsoft provides the “Support and Recovery Assistant (SaRA)” tool to diagnose and fix Outlook issues. Download here and run it to identify and resolve problems.

Step 9: Create a New Windows User Profile

If none of the above steps work, consider creating a new Windows user profile. Backup your data, create a new profile, and set up Outlook again.

create new windows profile

By following these steps, you should be able to resolve the issue of Microsoft Outlook not responding on Windows 10/11 and restore the smooth functionality of your email client.

How to Check for any Software Conflicts?

To tackle Microsoft Outlook not responding on Windows, it’s crucial to investigate potential software conflicts that might be causing this issue. One helpful tool at your disposal is the Windows Reliability Monitor.

Access the Reliability Monitor

Press the “Windows + S” keys, type “Reliability Monitor” (without quotes), and select it from the search results.

reliability monitor

Analyze the Timeline thoroughly now. In the Reliability Monitor, you’ll find a timeline of events and software installations. Look for patterns or entries corresponding to the times when Outlook became unresponsive.

Identify Software Conflicts

Events like software installations, updates, or crashes may indicate conflicts with Outlook. Pay close attention to these entries.

Resolve Conflicts

Once identified, you have several options:

Update Conflicting Software: If outdated software is causing conflicts, update it to the latest version.
Uninstall Problematic Software: For software that consistently causes issues with Outlook, consider uninstalling it.
Check for Windows Updates: Ensure your operating system is up to date, as updates can resolve compatibility issues.

By using the Windows Reliability Monitor, you can pinpoint software conflicts that might be affecting Outlook’s performance and take steps to resolve them, ultimately restoring Outlook to responsive functionality.


Resolving the issue of Microsoft Outlook not responding on Windows 10 may require a systematic approach. By following the steps outlined in this guide, you can effectively diagnose and address the problem. From initial troubleshooting and identifying software conflicts to disabling problematic add-ins and creating a new Outlook profile, these methods offer a comprehensive toolkit to restore Outlook’s functionality.

Remember to keep your system and software updated, exercise caution with add-ins, and remain vigilant for potential conflicts. By doing so, you can ensure that Outlook operates smoothly, allowing you to manage your emails, calendars, and tasks with ease. In the digital age, where efficient communication is paramount, overcoming Outlook issues is essential. With these solutions at your disposal, you can regain control of your email client and maintain uninterrupted productivity. Do share this article with your friends. If you have any question, you can click to Visit Our Discussion Board.