How can I clear cookies from MS Edge programmatically using C#.NET

Akshit Jain 1

Like in IE we use rundll32.exe for clearing cache and cookies.

For Latest version of Edge I tried using this path : LocalAppData\Microsoft\Edge\User Data\Default.

In this path I tried deleting the cookies file but issue is that after deleting the file when I manually try to clear cookies from browser it still shows all the cookies..

What can I do to clear cookies from Edge(ver 96 +)

P a u l 10,736 Reputation points

2021-12-10T17:18:49.733+00:00

Deleting %LOCALAPPDATA%\Microsoft\Edge\User Data\Default\Cookies seems to remove all cookies for me - are you visiting the site again causing them to be set before you check them?

Also are you checking via the settings page or in the dev tools? i.e. edge://settings/cookies/detail?site={site} or the Application tab in dev tools?
Akshit Jain 1 Reputation point

2021-12-11T07:33:55.13+00:00

Hi Paul. Thanks for the response.
I am deleting the cookies file and after that I open edge and check the below address

edge://settings/siteData

It shows cookies as it is.
P a u l 10,736 Reputation points

2021-12-11T16:23:24.53+00:00

Is it a particular site/cookie that you're seeing being persisted? Could you give an example just so I can reproduce?

1 answer

XuDong Peng-MSFT 10,741 Reputation points Microsoft Vendor

2021-12-13T07:27:56.093+00:00

Hi @17383778,

Based on what has been mentioned, I did a simple test on it, and I found that deleting %LOCALAPPDATA%\Microsoft\Edge\User Data\Default\Cookies is indeed effective, but you need to disable this feature Allow sites to save and read cookie data (recommended), like this:

Hope this can help.

Best regards,
Xudong Peng

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XuDong Peng-MSFT 10,741 Reputation points Microsoft Vendor

2021-12-17T05:40:57.013+00:00

Hi @17383778, May I know if you have got any chance to check my answer? I am glad to help if you have any other questions.

Akshit Jain 1 Reputation point

2021-12-18T12:22:26.04+00:00

Actually this helps a lot. But while diving deep into the cookies. It shows that cookies are stored at various locations for different websites/webpages.

for example a website : microsoft.com
It has cookies stored inside Local Storage folder :

C:\Users\<username>\AppData\Local\Microsoft\Edge\User Data\Default\Local Storage

So to clear cookies we need to either delete contents from following folders or delete whole folders
The following folders contains most cookies

IndexedDB
Service Worker
Local Storage
Databases

XuDong Peng-MSFT 10,741 Reputation points Microsoft Vendor

2021-12-21T08:24:50.51+00:00

Hi @17383778 ，

Yes, you are right. Deleting the contents of these files can delete most of the cookie data. But when Edge is restarted and the feature Allow sites to save and read cookie data enabled, some data still exists. If they do not affect your solution (website), then you can ignore it.
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How can I clear cookies from MS Edge programmatically using C#.NET

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