Outlook Running Slow? 5 Ways to Speed up its Performance

Microsoft Outlook is one of the most primaeval email clients that we access, even today. With each Windows update, Outlook got better, secure, and more enhanced in every way.

But aren’t there are a few times when your Outlook responds slowly? When your emails take forever to load? You may have realized at some point of time or other that Outlook gradually starts getting slow over time. Isn’t it? The most common causes why your Outlook is not performing in its best state maybe because of a corrupt .pst file, presence of virus or malware, working on an outdated version on Outlook, too many add-ons, RSS feeds and more.

Outlook Running Slow
Image Source: Microsoft Support

Well, don’t worry! Here are a few speedy hacks to overcome “Outlook running slow” issues and to resume its lightning-fast performance.

Ways To Fix Outlook Running Slow

Let’s get started and explore a few troubleshooting ways to enhance its speed and performance.

Archive Emails

Ways To Fix Outlook Running Slow
Image Source: How to Geek

If you’re not used to of archiving your inbox, then maybe now is the time. Rather than keeping a clustered inbox, you should archive your less-important emails to keep your email space organized. As all your emails keep piling up in your inbox, you should maintain a habit of archiving your emails now and then to make sure that your Outlook is running in its best state.

Disable RSS

Disable RSS
Image Source: Extend Office

RSS (Really Simple Syndication) feeds a sort of file that stores information about the latest updates from websites and applications. Syncing RSS feeds from Internet Explorer is one of Outlook’s advanced feature which runs in the background. Sometimes when Outlook is syncing your RSS feeds, it might hamper its performance. To disable RSS feeds on Outlook, navigate to Options> Advanced and disable the RSS feeds option.

Create a new Outlook Profile

To create a new Outlook profile, follow these steps:

Launch Control Panel and select “Mails”.

Tap on “Show Profiles” option.

Tap on “Add” button to create a new Outlook profile, enter a name for the new profile, and press the OK button.

Create a new Outlook Profile 
Image Source: Microsoft Support


Don’t forget to check on the “Prompt for a new profile” option. Relaunch Outlook, select your new profile’s name and see whether it improved Outlook’s performance.

If you think the new profile is working in a pretty stable state, you can easily import/export your data across the profiles and get going.

Disable Add-ins

Have you installed a couple of add-ins on Outlook to improve user experience? Well, if Outlook is running slow, then you can try disabling a few add-ins to check whether it improves its speed and performance. Head on to Options> Add-ins and disable all the add-ins which you find suspicious or that might be slowing down your Outlook.

Download Complete items

Download Complete items
Image Source: MS Outlook

As soon as your Outlook connects to a POP3 or IMAP server, Outlook must download entire email messages so that it doesn’t have to connect to an external server each time you load an email message. To tweak this setting on your Outlook account, open the Send/Receive Settings window on Outlook and then enable the “Download Complete items including attachments” option and then hit OK button to save your changes.

Here were the 5 useful ways to resolve the “Outlook running slow” issue on your Windows 10 device. We hope these above-mentioned hacks will allow you to improve the overall experience of using Microsoft Outlook on Windows.

Good luck!

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