EV10 - VAC Indexing - credential prompt

Hello all,

When logged in to the EV-server, using an account that is Power Admin and Indexing Administrator in the Authorization Manager.

In the VAC, click on Indexing. I get a logon prompt.

When entering that account information, I get the Indexing dashboard.

When clicking Cancel, I have as summary:

HTTP Error 401.2 - Unauthorized

You are not authorized to view this page due to invalid authentication headers.

It seems to be going here:

Requested URL http://ALIAS.eu.CUSTOMER.com:80/EnterpriseVault/Indexing.aspx?SiteID=185B78B64120797479727CB1ADB1EFC091d10000ALIAS.eu.CUSTOMER.com&InstallPath=D:%5CProgram%20Files%20(x86)%5CEnterprise%20Vault

D:\Program Files (x86)\Enterprise Vault\webapp\Indexing

I've verified rights, and do believe I should be able to access without issues. When logged in with the VSA, there is no issue.

Does anyone have an idea what to check next?

Thanks.

GJ