Clearing the Outlook cache in Windows 10 can help resolve issues like slow performance or outdated information. To do this, you’ll need to close Outlook, access the hidden AppData folder, and delete specific cache files. This process can refresh your Outlook experience, ensuring it runs smoothly and efficiently.
How to Clear Outlook Cache in Windows 10
Clearing the cache in Outlook helps to remove temporary files that may cause the application to lag or behave inaccurately. Follow these steps to tidy up your Outlook and enhance its performance.
Step 1: Close Outlook
Before you start, make sure to fully close Outlook.
Exiting the application ensures that no files are in use, allowing you to safely delete the cache without causing any issues.
Step 2: Open the AppData Folder
Press Win + R, type %appdata%MicrosoftOutlook, and hit Enter.
This command opens the hidden AppData folder, where Outlook stores various files, including cache data.
Step 3: Locate and Delete the Cache Files
Find and delete the folder named RoamCache.
This folder contains all the cache files. Deleting it clears the cache, allowing Outlook to recreate these files fresh next time it runs.
Step 4: Restart Outlook
Open Outlook again to let it rebuild the cache.
By restarting Outlook, the application will automatically create new cache files, improving performance and resolving prior issues.
After completing these steps, Outlook will regenerate the cache files, which can fix various glitches or performance problems. Your email experience should feel smoother, and any outdated information previously causing issues will be refreshed.
Tips for Clearing Outlook Cache in Windows 10
- Always back up your data before clearing the cache to avoid accidental data loss.
- Clearing the cache regularly can help keep Outlook running smoothly.
- If you encounter errors, consider checking for updates as well.
- Use a reliable antivirus program to ensure no malware affects Outlook performance.
- Familiarize yourself with navigating hidden folders for easier troubleshooting in the future.
Frequently Asked Questions
What is the Outlook cache?
The Outlook cache stores temporary files that help speed up operations and store data locally for quicker access.
Why should I clear the Outlook cache?
Clearing the cache can resolve sluggish behavior, incorrect data displays, and other minor glitches by refreshing the stored data.
Will I lose my emails by clearing the cache?
No, clearing the cache will not delete your emails. It only removes temporary files that Outlook will recreate as needed.
Can I automate cache clearing?
Currently, Outlook does not offer an automated cache-clearing feature. Manual clearing is needed.
How often should I clear the Outlook cache?
Clearing the cache every few months or when you experience issues is generally sufficient.
Summary
- Close Outlook.
- Open AppData Folder.
- Delete RoamCache.
- Restart Outlook.
Conclusion
Clearing the Outlook cache in Windows 10 is a straightforward process that can significantly enhance your email experience. By removing temporary files, you allow Outlook to operate more efficiently, effectively reducing any annoying hiccups or outdated information.
Regular maintenance like this helps keep your system running smoothly, just like cleaning out a cluttered drawer allows you to find things more easily. While the process is simple, it can be a game-changer for those who rely on Outlook daily.
If you’re consistently facing issues, consider pairing this process with updates or even a system scan to ensure everything is in tip-top shape. By taking proactive steps, you can keep your Outlook experience running like a well-oiled machine.
For further reading, check out Microsoft’s support page or explore community forums where users share tips and tricks. Remember, keeping your tools in good shape makes any task easier and more enjoyable. So, take a few minutes to clear that cache and enjoy a smoother Outlook experience!

Matt Jacobs has been working as an IT consultant for small businesses since receiving his Master’s degree in 2003. While he still does some consulting work, his primary focus now is on creating technology support content for SupportYourTech.com.
His work can be found on many websites and focuses on topics such as Microsoft Office, Apple devices, Android devices, Photoshop, and more.