Single Sign on Copy and Paste into Excel then causes Pop up Login

Hi All,

Have you come across when you are in a web client UI, ie CRM Portal, you copy (CTRL C) HTML formatted text then paste (CNTRL V) into MS Excel, there is a prompt to reauthenticate even after single sign on has already been authenticated.

It seems that this is standard behaviour or as expected, have any of you by passed this through any MS settings?

Environment

SAP ECC 6.0 / SAP CRM ABAP 7.0

Single Sign-on 2 NW7.31 SP10

SSO2 certificate using X.509 and SPNEGO

Steps:

1. Open CRM Website (CRM_UI) which using HTTPS
2. Copy contents from Website
3. Paste to MS Excel or MS Word

Issue: MS Excel prompts to select certificate

Solutions tried

1. Registry changes – Not possible to change because of company policy

Value tried : BasicAuthLevel to 0

1. IE 10 or higher can’t be used to fix because of compatibility with SAP
2. Trusted option in MS office did not work.
   Updated all Root CA and server SSL certifications to <Trusted publishers>
   but still prompt to select credentials.

Solutions expected

1. Users want to use <ctl+C>  <ctl+V> command
2. Certificate must not show when user copy and paste data from Website to MS excel
3. When paste to MS Word, doesn’t show any data. Must paste data
4. Formatting doesn’t matter. ‘Keep text Only’ option is ok

Thanks all!

Andrew