Monday, September 2, 2013

401 Unauthorized errors on SharePoint 2013

In my SharePoint 2013 development environment I found a new issue which was not happened in past, I suddenly ran into 401 unauthorized errors.
Those errors would occur only when the pages would be rendered through the /_layouts/15/start.aspx page. This specific page is responsible for loading pages from a site using the Minimal Download Strategy feature, a new feature in SharePoint 2013 that improves client rendering performance and fluidity for navigating from one page to another page by downloading only the changes between two pages.

Error:
401 unauthorized

Solution:
If you are experiencing those 401 unauthorized errors, simply disable the following feature for now.
Site Settings > Manage Site Features > Minimal Download Strategy (see the image below)

Happy SharePointing...!!!
Posted by Manoj Patel
Labels: ,

29 comments:

  1. Dylan BerryNovember 26, 2013 at 12:00 PM

    Very helpful, I was starting to panic. This fixed my issues.

    ReplyDelete
    Replies
    1. AnonymousDecember 4, 2013 at 11:58 AM

      Thank you very much.

      But which features aren't available anymore if I deactivate this?

      Delete
  2. UnknownJanuary 15, 2014 at 7:13 AM

    Thx...great!!!

    ReplyDelete
  3. UnknownJanuary 28, 2014 at 1:34 AM

    WOW, THANKS! it did the trick...

    ReplyDelete
  4. amy lewarchikFebruary 18, 2014 at 12:09 PM

    Where would site settings be located? Within Sharepoint or within your browser's preferences (on a Mac)? Thanks!

    ReplyDelete
  5. Manoj PatelFebruary 21, 2014 at 4:04 AM

    Sorry Amy for late reply.

    Site Settings is located in your SharePoint 2013 Site's Site Action menu in top bar.

    ReplyDelete
  6. AnonymousMarch 10, 2014 at 4:43 PM

    I'm not using the minumn download Strategy still not working

    ReplyDelete
  7. AnonymousMarch 12, 2014 at 6:15 PM

    Hard to disable when you can't login...

    ReplyDelete
  8. MattMarch 20, 2014 at 8:04 AM

    Check that you have your Alternate Access mappings setup correctly for the webapp.

    ReplyDelete
  9. AnonymousMarch 31, 2014 at 6:15 AM

    Wow. Thanks a lot. U've killed my headache.

    ReplyDelete
  10. AnonymousApril 8, 2014 at 1:42 PM

    Thanks a lot.It worked fine.

    ReplyDelete
  11. AnonymousApril 11, 2014 at 2:21 PM

    How do you disable if you can't get into the site? How should Alternate Access mappings be setup? Thanks!

    ReplyDelete
  12. Lennart BossérApril 25, 2014 at 7:12 AM

    Big thanks, I was stuck a day until I found your tip!

    (One might think that the brains in Seattle should test such a feature AND/OR not setting it as default AND give a clue in warning messages )

    ReplyDelete
  13. ArthurMay 7, 2014 at 5:58 PM

    Thx !!!

    ReplyDelete
  14. Shafqat Nawaz BalouchMay 13, 2014 at 10:14 AM

    Turn off the feature? No that is not an option. It is a great performance enhancement that comes along with SharePoint 2013 so it should NOT be turned off! Keep it enabled and found out the real source of your problems instead.

    ReplyDelete
  15. Dimitris DaskalakisMay 19, 2014 at 4:38 PM

    It seems, that this: http://sandbox2010.kwizcom.com/sites/demo-data-view-plus/admin-corner-blog/Lists/Posts/Post.aspx?ID=4
    is the proper configuration to avoid 401 Unauthorized Errors

    ReplyDelete
  16. Carlos ReneJune 17, 2014 at 1:49 PM

    Thanks!

    ReplyDelete
  17. AnonymousDecember 1, 2014 at 3:48 PM

    Thanks for you trick!!

    ReplyDelete
  18. AnonymousJuly 2, 2015 at 7:32 AM

    A life saver trick. I'm glad that I only wasted 3 hours before finding this trick. It could take days.

    ReplyDelete
  19. AnonymousJuly 10, 2015 at 9:20 AM

    Thanks!

    ReplyDelete
  20. AnonymousJuly 20, 2015 at 9:19 AM

    for Mr anonymous 11th of april 2014, you can go to the following url http://yoursite/_layouts/15/ManageFeatures.aspx

    ReplyDelete
  21. UnknownSeptember 8, 2016 at 3:15 AM

    I haven't activated minimum download strategy.Iam able to access the central administrator page but not my webapplication!

    ReplyDelete
  22. Rajaniesh kaushiikkSeptember 23, 2016 at 10:17 AM

    Thanks a lot...It helped me but I am wondering whether this Minimal download feature is useless and can not be used ...

    ReplyDelete
  23. web developerJuly 12, 2017 at 5:43 AM

    Your blog has given me that thing which I never expect to get from all over the websites. Nice post guys!

    ReplyDelete
  24. AnonymousJanuary 13, 2018 at 6:46 PM

    So Very helpful. I didn't realize that I had this featured turned on and my later on I started getting that error.

    Thank you so much for pointing it out! This solved my problem.

    Cheers!

    Aftab S
    theItvideos.com

    ReplyDelete
  25. manthavanaJanuary 18, 2018 at 11:26 AM

    Great!!! Thanks for it

    ReplyDelete
  26. Manoj PatelJanuary 7, 2019 at 2:39 AM

    Thanks everyone for reading my this article and replied back with good comments.

    ReplyDelete
  27. AnonymousFebruary 1, 2019 at 2:52 AM

    when i access sharepoint 401 unauthorized and not able to login central administration; how to resolve

    ReplyDelete

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