Let's follow up this discussion at the Neptune Community
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when I start transaction /NEPTUNE/ADMIN I get a blank white page instead of the admin page. The preview in the browser works fine, only the preview in SAP GUI does not work.
Does anybody has any idea?
my SAPGui Version is 7.40 with patchlevel 3. I tried with IE 11.0.9600 and Google Chrome.
Yes, preview in browser works : http://url...:8000/neptune//neptune/admin.html?sap-client=800
The problem was in transaction STRUST. I deleted some entries in System PSE. Now it works fine.
I run the html test program too: SA38 -> SAPHTML_SSO_DEMO. Message is "Server successfully reached.".