Hi,
I'm having same issue.
I'm using Alfresco Community 4.2d on Windows 2003R2 and accesing the documents on the Share from Windows 7 clients with Office 2010.
Every time I click on Edit Online, I first get a pop up if I want to open a file from location "servername:7070". If I click OK, Word 2010 opens and than I get another popup telling me the server uses basic authentication and I need to input user name and password. User name and password are already populated, but checking the "Remember my credentials" does not help. I still get the pop up every time.
I found a post saying adding HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\WebClient\Parameters\AuthForwardServerList key with a value of the server name would help bypass this popup, but it didn't.
I've tried your suggeston to turn off WebClient service but that didn't help either. Also when I turn the service off, I can't map a the documentlibrary as a network drive, which I need so users can save email attachments to the Share.
Would setting SSL for Sharepoint protocol help bypass these popups? I've tried doing this but was not able to get it to work.
Any help would be appreciated, as I've been struggling with this for days now.
Thanks,
Davor