The screen shot link does not work.
We tested PWB v2.11.3 and PWB v2.11.4 using an unedited INI file on
http://webmessenger.yahoo.com/ without issues.
If you are using the PWB filters you may not be allowing access to portions web site. If you use a stock unedited INI file on your systems does the site work?
The browser is reported as whatever version of IE you are using. For example using PWB v2.11.3 on Windows XP with IE 8 the User Agent is reported as the following from
http://whatsmyuseragent.com/.
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.1; .NET CLR 3.0.4506.2152; .NET4.0C; .NET4.0E; .NET CLR 3.5.30729)
Using IE the User Agent is reported as follows from the same site.
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.1; .NET CLR 3.0.4506.2152; .NET4.0C; .NET4.0E; .NET CLR 3.5.30729)
As you can see they are identical, so the User Agent string is probably not the issue.
You can add the Station name to the User Agent string with the following settings.
[Browser]
AddStationToUserAgent=True
[Security]
StationEnvironmentVariable=COMPUTERNAME
Which results in the following.
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.1; .NET CLR 3.0.4506.2152; .NET4.0C; .NET4.0E; .NET CLR 3.5.30729) PWB:TSSWKS01;
--Scott