How to Clear Outlook Cache on Windows 10 and 11 – Full Guide

Outlook running slow or showing old email suggestions that won’t go away, that’s usually a cache problem. It’s one of those things that quietly builds up in the background and starts causing issues before you even notice what’s wrong. This blog covers the issue that users frequently ask, “How to clear Outlook cache.” It walks through the ways to clear the cache in Outlook email, removing autocomplete suggestions, and cleaning up temporary files that slow things down. 

What Cache Actually Is and Why Outlook Stores It 

Cache is saved data that Outlook keeps on your computer to load things faster. The idea is simple behind this is simple that instead of pulling everything fresh from the server each time, it just reads from what’s already saved on your machine. That makes things feel quicker, especially if you’re working with a large mailbox. Over time, that saved data stacks up and starts doing the opposite of what it’s supposed to do.

Benefits of Clearing Cache in Outlook

• Outlook opens faster once the stacked-up cache data is clear.
• Autocomplete stops suggesting wrong or outdated email addresses you haven’t used.
• Search results actually show the right emails instead of pulling up old or missing information.
• The whole app just feels lighter and more responsive after a proper cache cleanup is done.

How to Clear Outlook Cache on Windows 10 & 11?

These methods are easy to follow, which can be used by any non-tech person as well. 

#1: Clearing the Outlook Cache Files (AppData Folder) 

1. Firstly, close Outlook completely.
2. Then, press Windows + R to open the Run dialog box.
3. Type %localappdata%\Microsoft\Outlook\RoamCache and press Enter.
4. After that, the RoamCache folder opens, where cache files are stored.
5. Further, press Ctrl + A to select everything > right-click, and hit Delete.
6. At last, open Outlook again and let it rebuild the cache fresh.

#2: Clear Autocomplete Cache in Outlook

1. Firstly, open Outlook and click on File > Options > Mail.
2. Thereafter, scroll down to find the Send Messages section.
3. Then, click Empty Auto-Complete List.
4. Furthermore, confirm by clicking Yes.
5. Lastly, restart Outlook for changes to take effect.

Will Clearing Cache Delete My Emails?

No, this is probably the biggest concern people have before doing this. Clearing the cache does not delete your emails. Cache files are temporary data that is stored by Outlook locally. Your actual emails are not stored in cache files; they are stored in the mail server.

So even after you delete everything in the RoamCache folder, your inbox, sent items, folders, and contacts all stay exactly where they were. Outlook just re-downloads what it needs from the server when it restarts.

The only thing you’ll actually lose is your autocomplete suggestions. Those old email address shortcuts that pop up when you’re typing a name. Those get wiped with the cache. Everything else stays untouched.

How Often Should You Clear Outlook Cache

There is no fixed rule here, but clearing it every 2 to 3 months is a reasonable habit to get into. You don’t need to do it constantly because the Outlook cache does not become a problem overnight. If the app starts feeling sluggish, search stops working right, or autocomplete keeps throwing up wrong addresses, just clear it then.

Heavy Outlook users dealing with large mailboxes or hundreds of emails daily might need to do it more frequently than someone who checks email occasionally. It really depends on how much you use the app. A good way to think about it is to clear the cache when something feels off, or every few months as basic maintenance. Either way works fine.

Important Note: We believe that your doubt about “How to Clear Cache in Outlook Email” is now resolved. But we find that some users are still facing the issue without knowing the exact reason. If your Outlook is still responding slowly or you are facing the relevant issue, then there may be a chance that your Outlook has duplicate files. If you want a reliable solution to remove those duplicate files, you can use the Cigati Outlook Duplicate Remover. This tool removes duplicate files from your Outlook account efficiently in bulk.

Conclusion

That covers everything on how to clear Outlook cache on Windows 10 and 11. The two methods here are clearing the RoamCache folder and emptying the autocomplete list. These methods solve most problems people deal with. Most people wrap it up in under five minutes. And your emails are completely safe throughout the whole process. Cache is just temporary local data; your actual mailbox doesn’t get touched.

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