I am an owner at my SharePoint 2010 Standard Intranet Server and recently updated my PC with Windows 10 Anniversary. I noticed that now when I try to click on Edit Page, I get the following error:
Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurs while processing the request on the server. The status code returned from the server was: 400
When trying to edit an announcement, I get the following message:
The webpage cannot be found: This error (HTTP 400 Bad Request) means that Internet Explorer was able to connect to the web server, but the webpage could not be found because of a problem with the address.
This happens on all browsers on my PC.
If I connect to another PC, it works just fine, so there is no problem on the server. I can't do a System Restore, because the restore point before the update isn't available any more.