How to Reduce Outlook Startup Time by Disabling RSS Feed Subscriptions

Outlook can take a long time to open, especially if you have many RSS feeds configured. This delay happens because Outlook attempts to connect to and update each feed during its startup sequence. Disabling or removing these subscriptions can significantly improve launch performance.

This article explains how RSS feeds impact Outlook’s launch process. You will learn how to locate and disable these feeds to speed up startup.

How RSS Feeds Slow Down Outlook Startup

RSS, or Really Simple Syndication, is a legacy feature in Outlook that lets you subscribe to news websites and blogs. When Outlook starts, it checks each subscribed feed for new content. This process involves establishing network connections, downloading XML data, and parsing it into email-like items.

The more feeds you have, the longer this network and processing activity takes. This check occurs during the initial synchronization phase, which blocks the interface from becoming fully responsive. If a feed’s website is slow or unavailable, Outlook may wait for a timeout, adding further delay. Disabling feeds removes this startup workload.

Prerequisites for Managing Feeds

You need a working Outlook profile and mailbox. The steps are identical for Outlook as part of Microsoft 365 and standalone versions. Your account must have permission to modify folder settings, which is standard for a primary mailbox.

Steps to Disable or Remove RSS Feeds

You can manage feeds through the Account Settings dialog or by deleting the folder directly. Use the first method for a complete list and the second for quick removal.

Method 1: Using Account Settings

1. Open Account Settings
   In Outlook, click File in the top-left corner. Select Account Settings, then choose Account Settings again from the dropdown menu.
2. Navigate to the RSS Feeds Tab
   In the Account Settings window, click the RSS Feeds tab. This lists all your active subscriptions.
3. Select and Remove a Feed
   Click on the RSS feed you want to remove. Click the Remove button above the list. Confirm the removal when prompted. Repeat for other feeds.
4. Close and Restart Outlook
   Click Close on the Account Settings window. Fully quit Outlook and restart it to experience the faster startup time.

Method 2: Deleting the RSS Folder

1. Locate the RSS Subscriptions Folder
   In the Folder Pane, expand your mailbox. Look for a folder named RSS Subscriptions or RSS Feeds. You can press Ctrl+6 to ensure the Folder Pane is active.
2. Delete the Specific Feed Folder
   Expand the RSS Subscriptions folder. Right-click on the specific feed folder you wish to remove. Select Delete Folder from the context menu.
3. Confirm Permanent Deletion
   A dialog will ask if you want to permanently delete the folder and all its contents. Click Yes. This action removes the subscription.

Common Mistakes and Limitations

Outlook Still Slow After Removing All Feeds

If startup remains slow, other factors are likely involved. Large mailbox size, many add-ins, or a corrupted Outlook profile can also cause delays. You can test add-ins by starting Outlook in safe mode: press Windows Key + R, type ‘outlook /safe’, and press Enter. If it starts quickly, an add-in is the problem.

Accidentally Deleting Important RSS Feeds

The removal process is permanent for the local subscription. However, you can resubscribe to any public RSS feed by finding its URL and adding it again via File > Account Settings > RSS Feeds > New.

RSS Feeds Reappearing After Removal

This can happen if you are using a shared mailbox or your Outlook data file is synced from an old backup. Ensure you are modifying the correct profile. Check for rules or scripts that might be automatically recreating the subscription.

Managing RSS Feeds: Disable vs Delete

Item	Disable Feed (Remove Subscription)	Delete Feed Folder
Impact on Startup Speed	Immediate improvement	Immediate improvement
Data Preservation	Existing feed articles remain in the folder	All articles are permanently deleted
Re-subscription Ease	Must find and re-add the feed URL manually	Must find and re-add the feed URL manually
Primary Use Case	Stop updates but keep old articles for reference	Completely remove the feed and clean up space

You can now launch Outlook faster by eliminating the delay caused by RSS feed updates. For further performance gains, review your installed add-ins in File > Options > Add-ins. An advanced tip is to use the Windows Task Scheduler to launch Outlook a few minutes after you log in, allowing other startup processes to complete first.