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troubleshooting Question

can't login on my sharepoint from external location

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techneitsolutionsFlag for Belgium asked on
Microsoft IIS Web ServerMicrosoft SharePointWindows Server 2008
6 Comments1 Solution2295 ViewsLast Modified:

I installed Sharepoint 2010 on Windows Server 2008.
When I create a new site, everything works fine internally.

But when I go external, I can't login on my site.
Everytime when I try to login, My sharepoint site does nothing.

In the event viewer of my server I see that he generate an error everytime I try to login.

I added a dump of the error message as an attachment.

Can you experts help me?

Many thanks!

Log Name:      Application
Source:        Microsoft-SharePoint Products-SharePoint Foundation
Date:          5/07/2010 16:35:00
Event ID:      8306
Task Category: Claims Authentication
Level:         Error
User:          ***
Computer:     ***
An exception occurred when trying to issue security token: Method not found: 'Void System.IdentityModel.Selectors.SecurityTokenRequirement.set_IsOptionalToken(Boolean)'..
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
    <Provider Name="Microsoft-SharePoint Products-SharePoint Foundation" Guid="{6fb7e0cd-52e7-47dd-997a-241563931fc2}" />
    <TimeCreated SystemTime="2010-07-05T14:35:00.780Z" />
    <Correlation />
    <Execution ProcessID="3548" ThreadID="3620" />
    <Security UserID="***" />
    <Data Name="string0">Method not found: 'Void System.IdentityModel.Selectors.SecurityTokenRequirement.set_IsOptionalToken(Boolean)'.</Data>
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