iOS 10.3 Safari cookies won't delete

Is anyone having any issues with cookies in 10.3 Safari? Cookies don't seem to delete when I try to remove them using all the delete methods. Additionally, when I block cookies, cookies still get stored.


May be cookies settings have changed and I need to change something. Does anyone know?

iPhone 6s

Posted on Mar 30, 2017 4:40 PM

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Posted on Dec 27, 2017 12:59 PM

I've had the same issue with being unable to delete a number of "0 Bytes" cookies on my iPad for a while, but recently an eBay.co.uk cookie of 508KB size began to exhibit the same behaviour - at which point I "snapped", enough is enough! I found a solution, however it's a little long-winded and requires a Mac:


  1. Connect the iOS device to a Mac and create a backup using iTunes
  2. Open the backup using an explorer/editor tool such as iBackupBot (I was a little dubious about using this at first, but it was signed by a registered developer and did not require installation nor did it ask for a password input at any stage, so pretty safe)
  3. Navigate to the folder "User App Files > com.apple.mobilesafari > Library > Webkit > Website Data"
  4. Delete all files and folders in the enclosed IndexedDB folder - this is where the 508KB of eBay data seemed to be
  5. Delete all files and folders in the enclosed WebSQL folder - where all the other "0 Bytes" cookies are stored. I was amazed there were even cookies in here which didn't show up in the Website Data view in Settings. Mine had a whole trove of cookies from argos.co.uk, ebay.co.uk, and uk.farnell.com amongst others.
  6. Restore the backup to your iOS device using iTunes


This was sucessful for me on both my iPad Pro and iPhone SE - both on iOS 10.3.3. I can't confirm if it will work for iOS 11 devices, but from what I've read many people have found the cookie problem to be fixed in 11.1.2.

202 replies

Sep 24, 2017 8:01 AM in response to DontFailMeApple

Same problem for me - I can't get rid of eBay.co.uk in Safari 10.1.2 (12603.3.8) on OS X Sierra 10.12.6 despite deleting everything. It just keeps coming back. Why is something this stupid not fixed after so many people ('I have this question too' = 2195 at time of writing) have notified Apple of it being a problem?! The solution is to stop using Safari. Goodbye Safari (forever).

Oct 24, 2017 10:36 AM in response to tygb

It appears this is a higher level management issue for Apple to address and not one I am sure they choose resolve on behalf of users. Cookie management on IOS is dismal and in direct conflict with all the security measures that Apple builds its reputation on and advertises as a core principal. This is disappointing while user functions for Settings/Advanced/Website_Data are a continued joke with no imporovements over generations of IOS updates. I too just experienced several frustrating rounds of deleting cookies, backing out, closing apps, hard-resetting my iPad Pro, and finding the same cookies returned on Website_Data. The insult to injury is Apple’s choice to update user cookie management with appropriate Settings tools to protect ourself from outside corporate tracting mechanism. The Website_Data/Edit function to delete individual cookies is a typical example that does not allow for multible item selections. Rather, the Edit button is a failure while it only achieves the same 2-step function as a scroll left gesture on individual cookies to delete the database entry.

In view of the original question in this tread, reiterations of the original question from other users, additional observations such as my own, technical support responses that misinterpret what appears was a clear original question, tech support responses that appear to purposely redirect from the primary concern regarding cookie management, the months past without an appropriate tech support recognition of the original question as one that is valid, the reinforcement of other community users with similiar privacy concerns and, the lack of IOS generational improvements for appropriate user Website_Data interface tools is beyond failure. Above 95% of the time, my use of the iPad is with internet connectivity and access mainly through Apple’s principal app the Safari client. I know this, you mostly all know this, and Apple‘s management certainly has knowledge so, my use of failure in this tread to mildly describe Apple’s hidden policies on IOS user cookie management is in definition beyond failure. This is negligence.

What do I want? Provide me with the appropriate user interface IOS setting/systems/Safari tools to manage an internet session on IOS. Will include the functionality on to permantly delete on user Apple hardware or identity database, corporate cookies obtained by either user visits, landing, or from redirects by website IP automation or robotic collections. A Website_Data edit functions that allows users to views “Cookies by Groups” menu that can query and sort by (This session “In hr/min’s”; This day “24-hr/min period”; This week; This month; This year and; a custom range input by Dates “From-To”). Permantly delete cookies means “Permant deletion of cookies.” Therefore, correct system errors that allow cookie ghosting. Analysis of current cookie policy and industrial cookie technology on Apple systems. Develop a problem statement for Senior stakeholders to address Third Party development of cookie management apps for IOS if marketing opportunities exists In balance to risks. A third party agreement with a company that is dedicated to eradicating these solutions and includes the release of how-to solutions to Apple has value long term brand value.

Let’s address the why? My bottom line response to anyone who needs to ask this silly question is that “I Pay.” I not only paid a premium for each iPad, I incur ongoing costs and payments to Apple via subscriptions, insurance payments, services, music, third party products, and the additional new Apps for which Apple accrues revenue. I Pay, and continue paying for in the interest of preserving jobs and let’s go as far to call it loyalty. From me with sufficient concern to look as deep as I can from this perch and lay out these concerns with possible solutions for you. Apple has a choice to recognize and acknowledge, my words, me (us), customers, with honesty, dignity, and respect the lists of problamatic issues and behaviors brought front on cookie privacy management in this tread by users who care. The other choice although, not completely B&W is Apple will continue to limit user cookie managment in risks to industry pressures by corporations seeking to track user movements and worst for Apple’s corporate revenue at user expense. Beyond this tread? You bet it has levels of concerns and from Apples view, maybe levels of interest. Please, fix these problems.

Dec 5, 2017 4:49 PM in response to DontFailMeApple

iPhone 6 plus - zero byte cookies issue

With the recent introduction of iOS 11 and subsequent updates I'm accumulating remnant 0 Byte cookies. iOS 10 was equally had the same issue. You wonder why Apple has failed to remedy such a basic error. Thankfully, touch-wood, there have been no like problems with my iPads. Having recently purchased a 10.5 pro and Pencil. I hope that my support will reflect an expeditious response. I've attached an evidential screen-dump. Thank you.User uploaded file

Dec 26, 2017 10:36 AM in response to IdrisSeabright

Jane Public, iOS10 and iOS11 still have no remedial answer to this issue. Only iPhone 6 series are, apparently, the only devices suffering from this anomally. It’s disappointing, given the resources at their disposal, this fault remains unresolved. Although your iOS is quoted as iOS10, the issue remains with iOS11, an opportunity missed. Further, the latest version is designed to provide support for multi-tasking achievable with additional RAM. This ultimately undermines any previous devices with the casualty of performance for older iPhones. Perhaps this is deliberate marketing, perhaps?. Irrespective of this possibility it would be a simple resolve to ensure no performance degradation and an opportunity to fix any prior issues - zero byte cookies being one of them. The pathetic array of procedures only provide temporary fixes and need to be repeated. The word “support” comes to mind, clearly Apple fail to appreciate customers with this predicament.

Jan 16, 2018 9:29 AM in response to gn07816

Just upgraded to iOS 11.2.2. It is worth noting each update clears zero byte cookies - which is good. Remember those with exotic resolves which need to be repeated every so often, likewise, each OS update - more about rampant security issues rather than iPhone 6 series owners - does clear zero byte residual cookies, but the jury is still out whilst we wait for a definitive commitment from Apple on this subject! This matter already detailed yet Apple support remain frustratingly silent and whilst it is clearly a support issue we must continue using this medium to express a determination to remonstrate justifiable critique over support failure. It may seem trivial but it is issues such as this which make the loudest noises!

Apr 13, 2017 7:54 AM in response to DontFailMeApple

The inability to delete certain cookies appears to be a bug in Safari and we all hope Apple is on this.


You will see in my threads that I found some persistent cookies--that previously would not delete--can be removed by visiting the site of the persistent cookie, go to Settings | Safari | Advanced | Website Data and manually remove the cookie. This only seems to work while Safari is still on that site. Additionally, while Safari is set to block cookies [ Settings | Safari | Block Cookies | Always Block ], 0 bytes cookies still get stored in Website Data.


I've learned more through additional trials:

  • A google.com persistent cookie will not remove using the method noted above, all other google tracking cookies do remove
  • 0 bytes cookies return data to web sites in that domain; I tested with a simple .cgi page and was able to return that the cookie exists, it just has no data
  • Resets [ Settings | General | Reset ] do not remove persistent cookies

Mar 30, 2017 11:13 PM in response to DontFailMeApple

Read this article : Clear the history and cookies from Safari on your iPhone, iPad, or iPod touch - Apple Support

and follow the steps in the article .

Block cookies

A cookie is a piece of data that a site puts on your device, so it can remember you when you visit again. Here's how to choose whether Safari blocks cookies:

  1. Tap Settings > Safari > Block Cookies.
  2. Choose an option: Always Block, Allow from Current Websites Only, Allow from Websites I Visit, or Always Allow.

If you block cookies, some web pages might not work. Here are some examples:

  • You might not be able to sign in to a site using your correct username and password.
  • You might see a message that cookies are required or that your browser's cookies are off.
  • Some features on a site might not work.

Best settings is allow from websites I visit : Safari for Mac: Manage cookies and website data using Safari

If you choose always block :

Always block: Safari doesn’t let any websites, third parties, or advertisers store cookies and other data on your Mac. This may prevent some websites from working properly.

And , if allow from websites I visit is selected : Safari accepts cookies and website data only from websites you visit. Safari uses your existing cookies to determine whether you have visited a website before. Selecting this option helps prevent websites that have embedded content in other websites you browse from storing cookies and data on your Mac.

Sep 5, 2017 7:15 AM in response to AstroMacMan

AstroMacMan wrote:


Actually, he didn't address why the problem has persisted!


But that wasn't my main point! It's the patronizing dismissal of it as an issue, condescension to others who are concerned, and claiming that cookies do not track, when, in fact, they can and do!

No, it was an (slightly exasperated) dismissal of Chicken Little behavior.

Sep 7, 2017 7:01 AM in response to IdrisSeabright

Tsk tsk Idris. Your shillish tone and condescension from on high are hardly constructive. Astro makes very valid points about privacy and Apple's inability to fix a glaring broken option that was previously available to the user to clear cookies in their browser and OS until recently. Apple needs to fix this promptly or lose customers who aren't standing in line at their Kool-Aide stand.


Thank you Astro for your astute responses.

Sep 9, 2017 7:55 AM in response to Chris Doyle

Thanks, Chris! Not sure why this issue has brought out such patronizing, shrill reactions ("shoot the messenger, and ignore the message"), but it has. It's very odd that those of us who respond to the arrogance of others -- and make efforts to correct their misstatements -- are the ones being branded as "incredibly insulting"!


It's thus gratifying to see that others such as yourself understand and appreciate our efforts in describing the issue!


Thanks, again!


P.S. It's also led people to misread posts and fixate on auto-correct mistakes or typos, too! Their shrill reactions are just that!

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

iOS 10.3 Safari cookies won't delete

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