Outlook System Resources are Critically Low – How to Fix

When fixing the critically low system resources in Outlook, understanding the background processes and utilizing the native tool is key. In this section, we will explore how these two aspects can help optimize Outlook’s performance.

From identifying resource-hogging processes to leveraging built-in functionality, we’ll provide insights and tips to ensure a smoother experience with your Outlook system.


Understanding the issue of Outlook system resources being critically low

When faced with the frustrating error message "Out of memory or system resources" in Outlook, it’s crucial to understand the underlying issue.

In this section, we’ll delve into the common problem of critically low Outlook system resources. We’ll explore the impact of memory issues and low system resources on Outlook’s performance, offering insights on how to tackle these issues effectively.

So, let’s dig in and discover how to resolve this nagging problem once and for all.

Error “Out of memory or system resources.”

Out of memory or system resources: Outlook users may face an error when the available memory or system capacity is critically low. This message warns that Outlook’s performance may be affected.

Solutions may include:

  1. Adding more memory to the computer.
  2. Disabling Cached Exchange Mode.
  3. Updating passwords and repairing installations.
  4. Restarting Outlook.
  5. Upgrading to a newer version of Windows.
  6. Repairing corrupt PST files.
  7. Performing a clean boot without conflicting software.

Optimizing Outlook:

  1. Disable Add-Ins that consume resources.
  2. Adjust power plans.
  3. Close unnecessary programs.
  4. Delete superfluous email messages.
  5. Group emails for better management.
  6. Utilize email recall options.

Memory Issues: It’s like having a forgetful goldfish trying to remember where it buried its memory when Outlook uses up system resources.

Memory Issues

Memory issues can affect Outlook, leading to issues and errors. This can have a bad impact on the app’s performance. It’s important to take care of them quickly.

Three points to think about:

  1. Memory Allocation: Outlook uses lots of resources, including memory allocation. Memory errors may occur when there isn’t enough memory or too much is taken by other processes. This can mean freezing, crashing, or sluggishness.
  2. Memory Leaks: Other times, parts of Outlook won’t release their allocated memory. This causes less memory over time, leading to system resource limitations.
  3. High Memory Usage: Certain activities, like opening large attachments or indexing lots of data, use lots of memory. If the system’s already low on memory or other intensive tasks are happening, this can cause low system resources.

Remember, addressing memory issues requires considering both hardware and software factors.

Low System Resources

“Out of memory or system resources” errors in Outlook can be caused by low system resources. This refers to inadequate memory, processing power, and other essential resources for Outlook to work.

  • Not Enough Memory: Low system resources can occur when there isn’t enough memory for Outlook to run. Multiple applications using up a lot of memory can create this issue.
  • High CPU Usage: High CPU utilization can also be a sign of low system resources. If there are demanding processes running, it can put a strain on the CPU and reduce Outlook’s performance.
  • Lack of Disk Space: Limited disk space can also lead to low system resources. More free space on the drive where Outlook is installed can cause various errors.
  • Virus or Malware Infections: Virus or malware infections can consume system resources. These malicious programs can disrupt normal operations and lead to low system resource availability.

By taking steps to optimize system resources and ensure they are available for Outlook, users can reduce errors like “Out of memory or system resources” and get a better experience when working with emails and other tasks in Outlook.

How to fix the “Out of memory or system resources” error in Outlook

So far, we discussed the reasons and basic steps to solve the error; now, let’s find out some more steps you can follow.

Let’s explore the step-by-step methods to resolve this problem once and for all.

Add More Memory

One solution to fix the “Out of memory or system resources” error in Outlook is adding more memory. This can improve performance and reduce problems related to low system resources. Here’s a guide on how to do it:

  1. Check the type and maximum capacity of RAM supported by your computer. Check the device’s documentation or the manufacturer’s website.
  2. Buy RAM modules based on the specs you found.
  3. Switch off your computer and unplug all power sources.
  4. Open the computer case and find the RAM slots on the motherboard. These are long, narrow slots with clips on the sides.
  5. Insert the new RAM module into an empty slot. Make sure it’s aligned and firmly seated.
  6. Push down both sides of the module till you hear a click.
  7. Do this for any extra RAM modules you want to add.
  8. Close the computer case and secure all latches and screws.
  9. Plug in all power sources and turn on the computer.

Adding memory might not be necessary for all cases. There may be other reasons behind system resource problems in Outlook.

Disable Cached Exchange Mode

The ‘Disable Cached Exchange Mode’ option in Outlook can be useful. It allows users to access their mailbox even when not connected to the Exchange server. Disabling this mode might help solve system resources or memory errors in Outlook.

Here’s a guide on how to disable Cached Exchange Mode:

  1. Open Outlook. Click “File” in the top left corner.
  2. Select “Account Settings” from the menu that appears. Then click “Account Settings” again.
  3. In the Account Settings window, choose your email account. Then click “Change”.
  4. Uncheck the box labeled “Use Cached Exchange Mode”. Then click “Next”.

By doing this, you can disable Cached Exchange Mode in Outlook. This might fix low system resources and memory issues.

It’s important to know that disabling Cached Exchange Mode means you’ll need an internet connection to access your mailbox. It won’t be stored locally on your computer. However, this can help free up system resources and improve Outlook performance without losing access to your emails.

Repair Installation

Is your Outlook system resources error stubborn? Repair installation could help troubleshoot and resolve the issue. Here’s a 4-step guide for doing a repair installation in Outlook:

  1. Close Outlook. Make sure no Outlook instances are open.
  2. Open Control Panel. Search it in the Start menu or right-click on the Windows icon and select Control Panel.
  3. Uninstall/Change Program. In the Control Panel, go to the Programs category and click on “Uninstall a program” or “Programs and Features”.
  4. Select Microsoft Office. Find Microsoft Office in the list of installed programs. Click on the “Change” or “Repair” button.

Additional instructions may appear during the repair process. Repairing an installation can restore missing/corrupt files that could be causing the system resource error in Outlook.

A repair installation should fix issues in Microsoft Office, including Outlook. Finally, restart Outlook. It might fix the ‘Out of memory or system resources’ error.

Restarting Outlook

Are your Outlook system resources critically low? Restart Outlook! It might help resolve any glitches or errors causing the problem. Here’s a guide:

  1. Close Outlook completely – not running in the background.
  2. Wait a moment for the system to reset & delete temp data.
  3. Reopen Outlook from the Start menu.
  4. Check if the “Out of memory” error still appears.
  5. Test functionality (sending/receiving emails, calendar events, contacts).

Upgrade Windows

Upgrading Windows is a must to solve the “Out of memory or system resources” issue in Outlook. It gives users better performance and ensures their software is updated with the latest security patches. Plus, it can fix any issues related to low system resources that might be causing problems. It creates a fresh platform, so applications like Outlook run smoothly.

When upgrading, it’s key to check compatibility with other software and hardware. Updating drivers and verifying compatibility can stop possible conflicts or errors that could harm system performance.

Clean Boot

You can do a clean boot to help Outlook’s system resources and boost its performance and stability. Here’s how:

  1. Press the Windows key + R to open the Run dialog box.
  2. Type “msconfig” (without quotes) and press OK. This will open the System Configuration window.
  3. On the Services tab, check the “Hide all Microsoft services” box and click “Disable all“. This will stop non-Microsoft services that could cause conflicts with Outlook.
  4. Next, go to the Startup tab and click “Open Task Manager“.
  5. In Task Manager, disable each startup item individually by right-clicking and selecting Disable. This will keep unnecessary programs from automatically starting up when you boot.
  6. Restart your computer to put the changes into effect.

This clean boot will isolate any conflicting programs or services that may be affecting Outlook.

Disable Add-Ins

1. Disable Add-Ins:

When experiencing low system resources in Outlook, disabling add-ins can help. These add-ins are extra features and programs that can make Outlook better, but also can take up a lot of system resources, causing performance problems. Disabling them can help optimize resource usage and improve Outlook’s performance.

2. How to disable add-ins in Outlook:

Follow these 6 steps to disable add-ins in Outlook:

  1. Open Microsoft Outlook.
  2. Click the “File” tab at the top left.
  3. Choose “Options” from the list.
  4. In the Options window, select “Add-Ins” on the left.
  5. Under “Manage,” select “COM Add-Ins” from the drop-down menu and click “Go.”
  6. In the COM Add-Ins window, uncheck the add-ins you want to disable and click “OK.”

By following these steps, you can disable unnecessary add-ins in Outlook. This will reduce resource usage and might resolve any memory or system resource-related errors.

Close Unnecessary Programs

When looking to enhance the performance of Outlook, system resources must be managed correctly. One way to optimize it is to close any programs not needed. Here’s a 3-step guide on how to do it:

  1. Identify Programs: Find any apps not required for your current task. These may include media players, web browsers, or resource-heavy software.
  2. Close Programs: Once you’ve identified the unneeded programs, shut them down. Go to the taskbar or system tray, right-click on their icons, and select the option to close or exit the program.
  3. Monitor Resources: After closing unneeded programs, check system resources with Windows Task Manager or similar. This will let you see if closing these programs improved performance and memory usage.

Fun fact: Microsoft research has found that regularly cleaning up email folders and deleting unnecessary messages not only increases Outlook’s speed, but also reduces storage space requirements.

Delete Unnecessary Email Messages

It’s time to delete the emails you no longer need! This will help improve Outlook’s performance and efficiency. Here’s a 4-step guide to do it:

  1. Sort emails. Group them by sender, subject, or date.
  2. Identify redundant ones. Old newsletters, spam, resolved conversations – all of these can be deleted.
  3. Delete unwanted emails. This will free up space and lessen the strain on system resources.
  4. Empty the Deleted Items folder. To completely remove them from your mailbox and recover storage space.

To get the most out of Outlook, regularly delete unnecessary email messages. Optimize memory usage, disable add-ins, repair PST files, and upgrade Windows. And don’t forget to unite your cluttered inbox with group emails! Start deleting today and enjoy a more efficient workflow.


Backing up Exchange data is a must for Outlook system safety and availability. When a system resources error occurs, it is essential to have solutions ready.

One way to fix the problem is to optimize the mailbox. Archive old emails and remove unnecessary attachments. This helps reduce the burden on system resources and boosts Outlook’s performance.

Check for any corrupt or oversized PST files. System resources use up a lot of space and cause problems. Repairing and compacting these files eases the strain on Outlook system resources.

Regularly update Outlook and its components to prevent system resource errors. Microsoft releases patches and updates to improve stability and performance. Keep software up-to-date for a better email experience.

Proactive measures like backing-up Exchange data and implementing solutions can prevent Outlook system resources error. Ensure availability and optimize the performance of Outlook for a smooth email management system.

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