Hi, shah

1. 
   
2. Which version of IE are you using to open k2 designer?
   
3. and which version of K2 SmartForms have you installed?
   
4. Please try opening K2 designer, using Chrome or Firefox to see if the same error occurs
   

Regards

Julia

Dear Julia,

Thanks for your prompt response.

I tried with Firexfox also but get the same error messag.

K2 smartforms version:  1.0.6 (4.12165.1625.0)

Interner Explorer:            8

Regards

Shah

Hi, shah

IE 8 is not supported in K2 smartforms 1.0.6 (4.12165.1625.0) or greater, for Design time browser.

Please see the K2 smartforms Compatibility Matrix link below:

http://help.k2.com/smartforms/support-matrix

I would suggest you upgrade your browser to IE 9 or higher.

Regards

Julia

Hi, shah

As i was doing my research on this issue, i found that the likely cause of the issue may be Port 5555 and/or 5252 not open between SharePoint and K2

Please see below links for more info:

• 
  
• K2 and Firewalls
  
• Install and configure a K2 Host Server
  
• Required Permissions for K2 Components
  
• SharePoint Timer Activation Feature
  
• K2 for SharePoint - Required Permissions-K2 designer for SP
  

Kind Regards

Julia

Hi, shah

I've just edited the above post links as they were all leading to a wrong site.

Regards

Julia

Hi Shah

This is a known issue where users from foreign domain can’t authenticate as it actually tries to auth the user with using the incorrect domain (Using the local domain).

I suggest that you logg a ticket for this as there is a Coldfix for this issue but it can only be provided over a ticket.

Hi, shah

Just to follow up on this post are you now able to start the k2 designer through the browser without errors?

Regards

Julia

Still I am not able to start K2 Designer through browser..

Regards

Shah

Hi, shah

I would suggest you log a support ticket as Raymond suggested.

Regards

Julia