Hello,
It's unclear from the first screenshot if Integrated Windows Authentication (IWA) is enabled in your server installation and it's unclear what URL you are using. By default, SVN clients use IWA for authentication when both Basic and IWA are enabled on the server. Normally, IWA doesn't prompt for credentials. IWA requires that your server and client computers are joined to an Active Directory domain. So is your client computer in domain when the problem occurs? And what full URL are you using?
Anyway, to further troubleshoot this issue, you need to examine the events in the 'VisualSVN Server' event log:
- Open Windows Event Viewer.
- Expand the Applications
and Services Logs category.
- Click
VisualSVN
Server.
So what events are logged when you attempt to authenticate to your VisualSVN Server installation?
I have to note that this doesn't look like an issue for the users@ TortoiseSVN mailing list, as most likely it's not specific to the TortoiseSVN client program.