First: Confirm the exact user credential defined at the time of installation and configuration of Adobe LiveCycle Server by following steps below
Access the pagehttp://<hostname_of_Adobe_LiveCycle_server>:8080/adminui
Enter username asadministratorand password aspassword
Click onSettings > Trust Store Management > Local Credentials:
Second: Update theDocument Adapter Configurationto reflect the same user credential by clicking onadapter.pvifile in worker setup directory
Third: Make sure Readerextension Credential alias in adapter.pvi file and property edrload.livecycle.assembler.credentialalias under <Windchill_Home>\codebase\WEB-INF\conf\wvs.properties file are same
Alternatively: This same error can also occur when the LiveCycle server's host name (or IP address) is not listed in the Internet ExplorerTrusted Sites:
Internet Options > Security tab
Select Trusted sites from the Select a zone to view or change security settings list
Click the Sites button
Add the server hostname or IP address
Click Close andOK respectively to close the dialogues