In a small number of instances on Windows, a user may get a dialog box when the Workbench starts up with a message: “CWPST0064E: Failed to log in”

This may occur if the Windows user’s password has recently been changed. To correct this problem, delete the following file:

{user.home}/IBM/ISAv4/.metadata/.plugins/com.ibm.rcp.security.auth/.keystore.JCEKS.IBM_J9_VM

The next time that the workbench is started, a new file will be created; however, the user will need to re-enter a proxy password in the “Network Connections” preferences (if one had previously been supplied)