When utilizing Outlook, users may encounter frequent instances of application slowdown. Several factors can contribute to this sluggish performance in Outlook, including oversized PST files, excessive data, outdated software versions, virus attacks, and more. Let's delve into these reasons in greater detail:

Top Reasons to Why Outlook Goes Slow

MS Outlook can experience sluggishness when it encounters connectivity issues stemming from the email provider's end or when a password has been changed. Entering an incorrect password can impede Outlook's ability to reach email servers, leading it to repeatedly send incorrect credentials in an attempt to establish a connection, ultimately resulting in application slowdown.

MS Outlook's performance can also be affected by the hardware acceleration setting. Hardware acceleration is a technique that pushes a computer's hardware to operate at a faster-than-normal speed. However, in some cases, this technique can actually slow down Outlook. In such instances, the recommended action is to disable hardware acceleration.

MS Outlook's performance can be hindered by add-ins. While add-ins can be beneficial, having an excessive number of them or encountering conflicts with Outlook can lead to slowdowns. The optimal approach in such situations is to disable these add-ins.

In conclusion, when a user possesses a corrupted or excessively large PST file that surpasses the size limit, it can lead to slowdowns or even freeze Outlook on occasion.

How to tackle Outlook slowdown issues?

There are a few simple hacks you could use to speed your Outlook up. Let’s check them out:

  1. Update your Windows :- To maintain the proper functioning of your computer and Outlook, it's essential to ensure that you are running the latest version of Windows. Windows updates frequently include patches from Microsoft that not only enhance the speed but also bolster the security of your MS Outlook
  2. Consider Getting Inbox Archived :- When Outlook users allow a substantial volume of emails to accumulate in their mailbox, there is a risk of experiencing a slowdown in MS Outlook. To prevent this issue, consider setting up auto-archiving, which can assist in maintaining the normal performance of Outlook.
  3. Consider Disabling Add-ins :- Sometimes, leaving add-ins enabled can indeed slow down your Outlook, particularly when it comes to third-party add-ins. Therefore, if you're not actively using these add-ins, it's worth considering why you would keep them enabled.
  4. Disable the RSS Feeds Already!!! :- Numerous individuals keep RSS Feeds enabled to stay updated, but it's important to disable them if you're encountering Outlook slowdown issues. Often, these feeds can be a cause of Outlook's sluggish performance. After disabling them, assess whether Outlook's performance improves. If not, you can re-enable the RSS Feeds. If none of these methods, including the ones mentioned above, prove effective in speeding up your Outlook, then it's advisable to explore the next troubleshooting method.
  5. Try Repairing PST File :- While there are some manual methods available to repair PST files, they can be complex and often carry the risk of data loss. Therefore, to save time and effort, we are recommending an automated solution. One such software that can assist in this regard is Kernel for Outlook PST Repair.

What makes Kernel tool so unique are its functions and features. To give a glimpse of its many benefits, here are some points:

  • Can Repair large-sized PST files.
  • Deleted messages are easily recovered.
  • Repairs your damaged Outlook data files (PST)
  • Recovers all the properties of the email, like Subject, From, Cc, Bcc, Date and Time.
  • The tool exports the PST files to Office 365, email servers as well as Web mails
Kernel for Outlook PST-Usage
  • Install the Tool (in case you haven’t)
  • Browse to select the file or files by selecting from either of the two given options.
  • Click Finish.
  • Select Folder or file(s) and Select Output Type, Click Next.
  • Click on Next
  • Attach a Prefix to store-name if you need. Click Next
  • Browse to select the folder to save in. Click OK.
  • Click Finish.
  • When Complete, you get the information. Click Ok.


Outlook, like all software applications, can sometimes encounter issues or slow down at inconvenient times. However, there's no need to panic. You can attempt manual methods, and if they prove effective, that's great. But if not, you have Kernel available as a mechanical solution to help you. We are confident that using Kernel will significantly improve the speed and performance of your Outlook. Additionally, if you require assistance, Kernel offers 24/7 online support. You can either chat with them online or give them a call – they are always ready to assist.