Outlook is running slow in Windows 10? Here’s how to fix it

As you might’ve noticed, the speed at which your computer’s running has steadily deteriorated over time. Perhaps there have been a few more updates or upgrades to Windows 10 since you began using it, and this is causing things to slow down for whatever reason. We’ll show you how to resolve that issue here with some easy steps so that everything goes back to normal!

The “outlook 365 slow windows 10” is a problem that many people have been facing. The solution to this issue is simple and easy.

Milan Stanojevic is a writer who lives in Belgrade, Serbia.

Expert in Windows and Software

Milan has been fascinated by computers since he was a youngster, and this has led him to be interested in all PC-related technology. He worked as a front-end web developer before joining WindowsReport. Continue reading

Updated on November 22nd, 2021

Publish date: August 2020

• For years, Outlook has been one of the most popular email systems in the world, delivering superior email management tools.
• Many users, however, claim that Outlook is sluggish, and in this post, we’ll look at how to speed it up.
• You’ll learn how to access Outlook in safe mode, resolve data file issues, restore your Outlook profile, and more in the sections below.
• Furthermore, we recommend third-party email client solutions that may be more suitable for you.

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Email is an important part of our everyday lives, whether as individuals or in company, and it may be difficult for IT administrators or managers if emails are down since it interrupts communication.

Outlook is the de facto standard email client in the business sector, and although it performs well, it is not without flaws.

A corrupt or damaged PST file, a non-functioning add-in, a corrupt profile, or a problem with the Outlook program may all cause performance difficulties with Outlook.

On this post, we’ll show you how to solve Outlook’s slowness in Windows 10, so keep reading.

How can I speed up Outlook on Windows 10?

1. Open in Protected Mode
2. Error Fixing Outlook Data File
3. Outlook Profile Restore
4. Make a new Outlook profile if you haven’t already.
5. Outlook may be repaired using the installer.
6. Remove everything that causes the PST to bloat.
7. RSS feeds should be disabled.
8. Complete items may be downloaded.
9. Windows should be updated.
10. Calendars should be pared down.
11. Utilize the cached exchange mechanism.
12. Messages in your inbox should be archived.
13. Maintain a small PST file.
14. Add-ons should be disabled.
15. Alternatives from other parties should be considered.

1. Switch to Safe Mode.

1. Right-click Start and choose Run.
2. Press Enter after typing outlook.exe /safe.
3. If Outlook is sluggish in Safe Mode, it’s possible that an add-in is to blame.
4. Select Options from the File menu.
5. Scroll down to Manage under Add-ins.
6. Remove the checkmarks on the following screen after clicking Go.
7. Turn off all add-ons.

2. Resolve Data File Issues

1. To locate the PST file, go to Control Panel and click Mail.
2. Select Data Files from the drop-down menu.
3. If there are many PST files, search for the one that has a checkmark (default).
4. Uncheck Hide extensions for recognized file types in Show hidden files, folders, and drives.
5. Make a backup copy of the PST file and store it somewhere secure or on removable media.
6. Change the extension from.pst to.psp.
7. Start Outlook.
8. When requested to create a new PST file on startup, click OK twice.

3. Restore your Outlook profile

1. Select Mail from the Control Panel.
2. Select E-mail Accounts from the drop-down menu.
3. Go to the E-mail tab in the Account Settings dialog box.
4. Select your account and then click Repair.
5. Follow the repair wizard’s instructions.
6. Finish by clicking the Finish button.
7. Restart Outlook after the correction is complete.

You may also try copying and pasting the current profile to see if it works:

1. Select Mail from the Control Panel.
2. Select Copy from the Show Profiles menu.
3. For the profile, give it a new name.
4. From the Always use this profile button, choose your new profile.
5. Click OK.
6. Outlook should be restarted.

4. Make a brand-new Outlook profile.

1. Select Mail from the Control Panel.
2. To see profiles, choose Show Profiles.
3. Click Add and give the new profile a name.
4. Click OK after selecting Prompt for a profile to be used.
5. Start Outlook and choose the new profile from the drop-down menu.

5. Use the Outlook Installer to repair Outlook.

If none of the procedures above worked, your Outlook is most likely destroyed. Change in Apps and Features allows you to fix Outlook (right click Start and select Apps and Features).

If none of the previous techniques work, you’ll need to remove and reinstall Outlook/Office.

6. Get rid of everything that causes the PST to bloat.

1. Locate the Larger than 100 Kb folder.
2. Delete any outdated emails that you don’t want (with bulky attachments).
   • Save any attachments you’ll need on a disk, but don’t keep them in the PST.
3. Delete any additional emails that you don’t want.
4. Trash must be removed.
5. To save up space in your PST file, archive your emails by year.

7. Turn off RSS feeds

By default, Outlook syncs RSS feeds from Internet Explorer to its RSS reader, which might slow Outlook down if you have a lot of saved feeds.

Disable this function by unchecking both choices under RSS feeds in the Advanced tab of Options.

8. Download the whole set of objects

When using IMAP or POP3, Outlook should be set up to download full and complete messages so that it doesn’t have to sync with the server every time you click on a new email or item.

To activate this, look for the Download Complete Item Including Attachments option.

9. Install the latest Windows updates

Because Windows Upgrades for Office are likewise ‘hidden,’ you must enable them to install because Microsoft updates Exchange from time to time, which might break or create difficulties with Outlook-Exchange communication.

In order to remedy performance difficulties or other concerns, seek for Microsoft Outlook updates.

Reduce the number of calendars you have.

More data, which Outlook is obliged to get from the Internet, may exacerbate Outlook’s slowness on Windows 10, causing it to lag.

You can share one or two calendars, but more data means Outlook will be slower.

11. Make use of the Cached Exchange Mode.

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This copies the data file from the PST to your OST, allowing Outlook to run faster since it won’t have to read its data file over the network, but rather from a locally stored data file.

This option is only available when Outlook is connected to an Exchange server.

12. Messages in your inbox should be archived.

Millions of email users, including Outlook users, have thousands of emails in their inboxes, most of which are unread, which may create major issues when utilizing PST files. You may use auto-archiving to save just a portion of those many emails in your Inbox.

Keep the most recent and prior months’ emails in your Inbox folder, and archive the remainder. This produces a new data file, removing the burden on Outlook caused by a huge PST/OST file.

13. Keep the PST file as little as possible.

1. Go to Account Settings and choose Data Files from the drop-down menu.
2. Choose the data you’d want to compress.
3. Select Advanced from the drop-down menu under Settings.
4. Select Outlook Data File Settings from the drop-down menu.
5. Now on the Compact Now button.

14. Turn off add-ons

1. Go to the Options tab in Outlook.
2. Select COM add-ins from the Add-ins menu.
3. Click the “Go” button.
4. Locate the questionable add-ins and uncheck the boxes next to them.

15. Look at third-party options.

We highly suggest Mailbird – Winner of Most Popular Mail Alternative 2021 – if you can’t get Outlook to perform faster or just want a nice email client.

It is the market leader and will meet all of your mailing management demands.

The fact that it can manage numerous e-mail accounts, allowing you to add more than just your Gmail account to your list, is a huge benefit that makes Mailbird so popular.

You may also use Mailbird to sync your Google Calendar and Twitter accounts.

Online privacy is crucial, particularly when it comes to emails, and the fact that this program encrypts all emails sent out makes it even more impressive.

There are a variety of additional alternatives as well. We suggest researching the top Windows 10 email client applications since they provide a wealth of functionality.

Many modern email clients also serve as task management systems, with powerful search capabilities, automatic emails, digital signatures, and other features.

Were the techniques above successful in resolving Outlook’s slowness in Windows 10? Please share your thoughts in the comments box below.

If you’re looking for more similar articles, bookmark our fantastic Outlook Hub.

On our Troubleshooting page, we’ve prepared additional articles about typical problems.

Are you still experiencing problems? Use this tool to fix them:

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The “office 365 outlook performance issues” is a problem that many people have been having with the new Windows 10 operating system. The issue is that Outlook is running slow and users are not able to open emails or attachments.

Frequently Asked Questions

How do I fix Outlook slowness?

A: This is a common issue, and while we cant offer you specific solutions to the problem from our end, there are some things that you can try. First of all, make sure your computer meets system requirements for playing Beat Saber or any other game on PC. Secondly, do an internet speed test using this website (https://www.speedtest.net/). If you have bad connectivity with your ISP provider, it could be slowing down performance in general which would affect games like Beat Saber as well as many others online apps such as Facebook messenger and Google searches etc..

How do I make Outlook run faster on Windows 10?

A: There are many factors that contribute to how fast your computer runs such as the amount of RAM and CPU. The speed at which you run Outlook is also determined by other programs running on your PC, so its not fair to say that Outlook has a direct impact in this regard.

Why is my Outlook loading so slow?

A: The average Outlook loading time is about 10 seconds. It can take up to 30 minutes for a large email to load on your computer, so keep this in mind when sending emails.

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