BO Explorer - No SAP Authentication - after Patch to SP4 Patch4

Hello Community,

i patched yesterday our complete BO from SP4 Patch 0 to SP4 Patch 4

After that when i open the BO Explorer with

http://host:8080/explorer

There is no more Authentication Mode: SAP

Only Enterprise is remaining... in all other Tools SAP Authentication is possible... ?!

So all configuration checks are OK.

Anybody an idea why this happened?

Regards