Solved

clear preflight cache on IE?

Posted on 2013-12-17
11
393 Views
Last Modified: 2014-01-17
Hi Experts,
Can anyone PLEASE tell me how to clear the preflight cache on IE?

Many thanks!
Mike
0
Comment
Question by:thready
  • 5
  • 4
11 Comments
 
LVL 83

Expert Comment

by:Dave Baldwin
ID: 39725285
Never heard of "preflight cache".  You can clear the normal cache (which is the Temporary Files) in Internet Options on the General tab under Browser History.
0
 
LVL 1

Author Comment

by:thready
ID: 39725461
Preflight cache is a special cache for saving preflight requests.  See http://www.w3.org/TR/cors/
0
 
LVL 83

Accepted Solution

by:
Dave Baldwin earned 500 total points
ID: 39725530
According to this page, it is only related to Cross-Origin Resource Sharing (CORS).  It also says it should be cleared when your regular cache is cleared and that the normal expiration is 30 minutes.

https://developers.google.com/storage/docs/cross-origin
0
 
LVL 1

Author Comment

by:thready
ID: 39726489
Yes I'm doing preflight requests for CORS.  And the expiration we set was 20 days (it's an option that you can return along with the allow-origin flag).  The site says it "may" clear when you clear your browser cache.  And that's for chrome.  In IE, when you clear cache, you're given very specific items that get cleared and preflight results are not one of them..  It seems that this is definitely not cleared by IE when you clear normal cache...
0
 
LVL 83

Expert Comment

by:Dave Baldwin
ID: 39727426
Does your version of IE (?) even support CORS?
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 1

Author Comment

by:thready
ID: 39727456
Yes, CORS is supported on IE 10 and 11...
0
 
LVL 83

Expert Comment

by:Dave Baldwin
ID: 39727518
You're going to have to click on "Request Attention" above.  I don't know enough about this to help you.
0
 
LVL 44

Expert Comment

by:Rainer Jeschor
ID: 39728205
Hi,
just a guess but have you tried the clear cache function from IE11 dev tools?
Have you unvhecked preserve favorites?
0
 
LVL 1

Author Comment

by:thready
ID: 39729108
Just tried removing everything but the kitchen sink.  No luck...
0
 
LVL 1

Author Closing Comment

by:thready
ID: 39788462
Just clearing the browser cache is confirmed to work.  My problem was not because of the preflight cache.  It was just a red herring.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

JavaScript has plenty of pieces of code people often just copy/paste from somewhere but never quite fully understand. Self-Executing functions are just one good example that I'll try to demystify here.
This article discusses how to create an extensible mechanism for linked drop downs.
The viewer will learn how to create a basic form using some HTML5 and PHP for later processing. Set up your basic HTML file. Open your form tag and set the method and action attributes.: (CODE) Set up your first few inputs one for the name and …
This Micro Tutorial will demonstrate how nuggets on the Web are formatted by using Chrome Developer Tools. These tools would not only view the site's CSS but it can also modify it and save the CSS to use on your own site.

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now