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Questions tagged [authentication]

Validation the identity of the user, usually with username and password authentication.

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50 votes
5 answers
79k views

NTLM vs Kerberos

I just want to know the difference between NTLM and Kerberos. When to use NTLM and Kerberos and when not to use it? Why do you need to use Kerberos for authenticated feeds? Our admin is asking me why? ...
SPNotSoNewbieNow's user avatar
32 votes
6 answers
145k views

SharePoint Online REST API Authentication In POSTMAN

I am trying to authenticate with the REST API for a list in SharePoint Online using POSTMAN. For example, the URL for my site looks something like this: https://mytenantname.sharepoint.com/sites/...
motionpotion's user avatar
  • 2,247
27 votes
2 answers
14k views

HTTP 401 twice before HTTP 200 when serving files

I've built a Javascript web application which is served from Sharepoint (ie. there is no Sharepoint code at all operating on the web app, it's just some HTML/JS being served from a Sharepoint 2010 ...
JP.'s user avatar
  • 463
25 votes
4 answers
62k views

Why are user permissions set in AD not updated immediately to SharePoint?

I have a SharePoint 2010 Foundation installation on Windows 2008 R2 and SQL Server 2008 and using Claims and Windows authentication. Subsites are visible only to members of a certain group. However, ...
azzlack's user avatar
  • 353
24 votes
1 answer
2k views

SharePoint Hybrid Search Setup - Issues with Kerberos 3-Tier Farm

I'm having issues setting up the first leg of a Hybrid environment between my SP2013 Production On-Premise Farm with my SharePoint Online. It's a 3-Tier system with Kerberos authentication enabled, ...
Patrick's user avatar
  • 484
24 votes
1 answer
2k views

SharePoint 2013 CMIS producer NTLM authentication

I was able to integrate with SharePoint 2013 CMIS producer only by using Basic HTTP Authentication! According to Microsoft all other authentication methods are available, but so far I wasn't able to ...
Boris R.'s user avatar
  • 341
16 votes
1 answer
8k views

How to Impersonate Users Via Client Object Model?

I want to insert new SP List items -- blog comments, to be exact -- on behalf of other users. Ideally, I'd just pass a SharepointID for the user, but that doesn't seem to be possible. I think that ...
Sean Mahan's user avatar
13 votes
1 answer
954 views

Delegating/Forwarding SharePoint on-prem (ADFS) identity to call Exchange Online API

I have a SharePoint (2010) on-premises, plugged to an ADFS server. I deploy custom components (Web parts, _layouts pages) with custom code onto it. One of these components must access data stored ...
Evariste's user avatar
  • 9,731
12 votes
4 answers
2k views

SharePoint Setup Account (SP_Install) really necessary?

We’ve all been there assigning all accounts to install SharePoint. Specifically we use a setup account (SP_Install) and a farm administrator account (SP_Farm). When we install signed in to the server ...
Benny Skogberg's user avatar
  • 25.5k
12 votes
5 answers
4k views

External access - continually prompted for credentials

I have a client trying to access our hosted SP 2010 instance, an she can log in, but once she starts clicking, gets prompted to login again and again. She is accessing from the outside, not inside of ...
Daniel Williams's user avatar
12 votes
2 answers
4k views

Identify Current Authentication Method Being Used

I am working on a solution that needs to act slightly differently if the incoming request is NTLM vs. Kerberos vs. ADFS, etc. Does anyone have an example of how to determine the incoming ...
John Chapman's user avatar
  • 11.9k
11 votes
1 answer
4k views

Automatically Authenticating with On-Premise SharePoint 2013 with ADFS 2.0 using C# Application

We're trying to connect to an on premise installation of SharePoint 2013 which authenticates using ADFS. Our Development was done using Office 365 installation where the following code works perfectly ...
rwalker's user avatar
  • 111
10 votes
2 answers
6k views

Allow any user?

Please forgive the novice question, but I can't seem to find the answer. Is there a way to allow any user access to a SharePoint site without having to add them to a group or turn on anonymous ...
Justin Kohnen's user avatar
10 votes
6 answers
8k views

SharePoint 2010 custom 401 error page on authenticated site

I'm trying to create a custom 401 error page for my site. The setup is a SharePoint 2010 enterprise site with subwebs. The entire solution requires authentication (no anonymous access). I've tried ...
Thomas's user avatar
  • 980
10 votes
2 answers
13k views

Signout behavior without closing the browser?

We have, essentially, a custom asp.net application inside of SharePoint. We have a Logout button in the application that redirects to the _layouts/SignOut.aspx page. The user sees a message informing ...
aceinthehole's user avatar
10 votes
1 answer
5k views

Is the "Keep me signed in" in SharePoint Online a security flaw?

We are considering replacing our on-premise SharePoint intranet with SharePoint Online. I won't spell out the advantages, but I can see one big disadvantage - the "Keep me signed in"-button... Our ...
Fredrik Gunne's user avatar
10 votes
1 answer
4k views

Share authentication token between SharePoint 2013 and ASP.Net MVC Web API service

In SharePoint 2010 and earlier, it seems it was possible to share the authentication token with other ASP.Net applications using forms authentication and the ASPXAuth cookie. I have a SharePoint 2013 ...
Chris's user avatar
  • 171
10 votes
3 answers
894 views

Verify SharePoint user in ajax request

Consider the following: A logged-in user visits a publishing page in a SharePoint Online environment. The page loads data from a service running on another server using an ajax request. In this ...
claesv's user avatar
  • 305
10 votes
3 answers
5k views

Java to Sharepoint interface, with claims based authentication

I have a sharepoint server with a claims-based authentication (ADFS server). I have a Java app that needs to push data to a sharepoint list, preferably over the REST API, and with the additional ...
Trek's user avatar
  • 101
9 votes
6 answers
57k views

Difference between claim based authentication and classic windows authentication

I have read several articles about the same but still not cleared about the difference between claim based Authentication and classic window authentication in SharePoint 2013.i Understood the claim ...
SharePointMan's user avatar
9 votes
1 answer
44k views

Make a RESTful API Call to SharePoint Online from Console program

I knew how to make a RESTful API call to SharePoint 2013 OnLine from SharePoint APP (Provided-Host App). Like get List from Site. There are already many samples in here. Because the TokenHelper can ...
Joe.wang's user avatar
  • 407
9 votes
1 answer
7k views

How to use SharePoint web services? (esp. authentication)

I am trying to access list information on MOSS 2007 using web services. SppLists.ListsSoapClient proxy = new SurveyMerge.SppLists.ListsSoapClient(); proxy.ClientCredentials.Windows.AllowNtlm = true; ...
paul's user avatar
  • 1,013
9 votes
1 answer
11k views

Override _layouts/Authenticate.aspx for claims based authentication (LiveID)

I've configured claims-based authentication using Windows Live ID. In Microsoft service manager the default return URL is as in WS-Federation specification: https://domain.com/_trust/default.aspx I ...
AlexSSE's user avatar
  • 703
8 votes
2 answers
48k views

The remote server returned an error: (403) Forbidden

I am developing a C# console application on my local computer running on Windows 8. My target SharePoint server is SharePoint Online on Office 365. I am trying to get the web site name using web.Title ...
Jake's user avatar
  • 582
8 votes
4 answers
28k views

How to fix credential issue?

I tried both default credential and user/pass but keep getting 401 unauthorized error. What's the fix? Here is the error I am getting .... New-WebServiceProxy : The request failed with HTTP status ...
Mary Rivers's user avatar
8 votes
6 answers
44k views

Internet Explorer forces user to log into site with DOMAIN\USERNAME

I have a public Internet facing site running on SHarePoint 2010 using NTLM authentication. Users using FireFox/Chrome/Safari are able to log into the site using just their username and password. ...
Mike B's user avatar
  • 81
8 votes
1 answer
5k views

Sharepoint 2010 - NTLM or Kerberos

Would there be any situation where you would choose NTLM over Kerberos for a Sharepoint 2010 farm? The sites will use claims based auth, Internal users & content editors will authenticate against ...
redsquare's user avatar
  • 205
8 votes
1 answer
24k views

How to authenticate user in SharePoint online using javascript

I have a public site on Office 365 SharePoint Online. By default when user clicks on to sign in, it redirect to Microsoft login page. I don't want to redirect user to Microsoft login page. But ...
Mihir's user avatar
  • 1,546
8 votes
3 answers
8k views

OAuth Authentication and Authorization to REST API from a Node.js Javascript program

I have a Javascript that retrieves the UserCollection from a Site and does some other things from the REST API. This script runs in my own Node.js server. Currently, I use HTTP Basic Authentication ...
KennyC's user avatar
  • 191
8 votes
3 answers
2k views

How to implement 2 factor authentication in Sharepoint 2010?

Can anyone please mention how to implement 2 factor authentication in Sharepoint 2010? I have been reading alot of stuff. but can not figure out what exactly should I do first. Can anyone atleast ...
Nik's user avatar
  • 113
7 votes
5 answers
7k views

Management of external users

I'm planning a SharePoint2010 application where most of our users are on an intranet and authenticated through Active Directory, but where ~20% of the users are external to the organization. We are ...
Geir Smestad's user avatar
  • 1,680
7 votes
8 answers
52k views

Can't pass authentication to browse a Sharepoint site

I am trying to browse a Sharepoint site in IE8 from the server where it is deployed. When I am prompted to enter my credentials I enter them, but this doesn't work. The box keeps appearing and asks me ...
user avatar
7 votes
1 answer
2k views

Remotely authenticating users

We are creating a mobile web application that will run under ASP.Net and will connect to an internal SharePoint Server. We need to remotely authenticate users from this web application to see whether ...
Élodie Petit's user avatar
7 votes
3 answers
16k views

SharePoint repeatedly prompting iPad users for credentials

We have an internal portal on SharePoint Server 2010. For example portal.abc.com. We are using Windows authentication (NTLM). When users access the portal from a joined computer in an Active ...
SDG's user avatar
  • 117
7 votes
0 answers
607 views

ASP.NET Identity (2.0) with Sharepoint [closed]

I have been searching around for information about using the new ASP.NET Identity 2.0 with SharePoint, but not much luck... Anyone succeeded setting it up?
Ivar_'s user avatar
  • 171
6 votes
8 answers
12k views

SharePoint 2016 - ADFS - persistent cookie - office client integration - authentication prompt

After migration from sp2013 to new sp2016 server farm we have problems with office client integration. on sp2013 farm, if there was no persistant cookie written from IE, the client application ...
domsen123's user avatar
  • 590
6 votes
2 answers
2k views

SharePoint 2013 Authentication model

I am new to SharePoint and have few questions regarding the authentication. We are using SP 2013 as extranet and we have different sites for different partners. Total number of users will be less ...
StreamingGuy's user avatar
6 votes
1 answer
6k views

Use App Password to Authenticate with PowerShell PnP

Suppose you have a tenant with MFA enabled. The same tenant allows users to create private app passwords like on the screenshot below. Question: Is it possible to use this app password to ...
Denis Molodtsov's user avatar
6 votes
1 answer
4k views

How do I avoid redirection for web service authentication in SharePoint 2010 when both claims and classic auth is allowed?

I have a SharePoint 2010 web application that allows both claims authentication and classic authentication. The Default claims provider for the web application has "Enable Windows Authentication" and ...
Kirk Liemohn's user avatar
  • 1,423
6 votes
1 answer
711 views

Unable to call graph API from SharePoint page

I am trying to call the graph API for fetching user profile information. The blog post I followed is: Extending SharePoint with ADAL and the Microsoft Graph API My AAD app config is like: URL: ...
Ashish's user avatar
  • 881
6 votes
2 answers
12k views

Authenticate to Sharepoint Online/Office 365 with cURL

I am currently trying to develop a PHP application that checks whether or not a folder exists in a SharePoint directory. While I have managed to submit the right REST requests when logged in inside ...
Jan's user avatar
  • 63
6 votes
3 answers
840 views

Always getting access denied for all loginaccounts

I'm in a middle of a process of setting sp_accounts to sp services and for some wrong behaviour I'm always getting access denied when enter the webapp for all accounts. Claims service could be the ...
fallout's user avatar
  • 1,015
6 votes
1 answer
926 views

Load / NTLM Auth / cache issue in Firefox and Sharepoint on premises

I am experiencing a very weird issue when trying to access sharepoint on premises from new Firefox version (Quantum >v60.0), (browser runnig on a windows computer). SCENARIO: Firefox is correctly ...
Alberto S.'s user avatar
6 votes
1 answer
4k views

What does "Security validation expires" do?

We have mixed authentication on our SharePoint 2013 site collection. I need to have FBA users automatically logged out after 30 minutes of inactivity, but they don't have to necessarily be redirected ...
matt's user avatar
  • 1,305
5 votes
3 answers
1k views

Is it possible to create a SharePoint provider-hosted low-trust add-in that works with an on-premises ACS?

This question is about using provider-hosted add-ins on-premises that use the low-trust authorization model - without requiring internet access. Provider-hosted low-trust add-ins need a connection to ...
Heinrich Ulbricht's user avatar
5 votes
5 answers
44k views

Automating SharePoint upload and download using script in Linux system

I am new to SharePoint. I was trying to download and upload file using Perl script in a Linux machine but getting an "NTLM Authentication Error" while running the script. I tried downloading the ...
VED's user avatar
  • 51
5 votes
2 answers
4k views

Zones, AAM, Host Headers,

I am getting really confused as when to use AAM and when to use header. I wish there was table to list scenarios and based on that you would pick AAM or host headers. Same thing I am trying to ...
Silvia Ortiz's user avatar
5 votes
6 answers
1k views

SharePoint 2007 : How to sign out user?

I've an application build on SharePoint 2007 platform, the problem is in Mozilla FireFox, the sign out button does not successfully sign out the current login user, I believe SharePoint 2007 is not ...
sams5817's user avatar
  • 423
5 votes
3 answers
6k views

Windows Authentication and Trusted Identity Provider - User mapping to a single identity store

First, let me describe the scenario: I have a Web Application with 2 enabled Identity Providers Windows Authentication Custom Trusted Identity Provider (that provider handles PingFederate SAML ...
ro78's user avatar
  • 51
5 votes
2 answers
482 views

Pre-authenticate a FBA user

We have SharePoint 2013 hooked up to the userstore of a third party web application. The users from that web application are now also known in SharePoint and able to log in using the same credentials. ...
Jasper's user avatar
  • 1,264

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