If you are making UCWA calls to create or manage conferences against SfBO, you might find it can fail for some users with an error: UserAgent string is empty. Mandatory parameter. It appears at least one UCWA library (https://github.com/kenakamu/UCWA2.0-CS) is sending HTTP requests with no HTTP User-Agent header. This has not been an issue previously,…
Read More SfBO UCWA with Modern SchedulingThis is a common issue that I see that is impacted by the Lync deployment itself. You have deployed the UCWA sample, and are trying to sign in, but it always fails. If you check the HTTP traces you can see the following logged towards the end: OPTIONS https://director.nny.local/WebTicket/oauthtoken HTTP/1.1Accept: */*Origin: https://webdir.nnylync.infoAccess-Control-Request-Method: POSTAccess-Control-Request-Headers: content-type, accept, x-ms-origin…
Read More UCWA sign-in fails while seeing HTTP OPTIONS requestThis is a pretty common issue that comes up. One downloads the UCWA sample and sets it up. However when they go to sign in, they fail each time with an error "Login failed." If you check the HTTP response you'll see: HTTP/1.1 400 Bad RequestContent-Length: 25Content-Type: application/jsonX-Ms-diagnostics: 28020;source="Director.NNY.local";reason="No valid security token." {"error":"invalid_grant"} At its…
Read More Failed logins with UCWA sampleIn developing a UCWA application, you may come across a situation where you end up transitioning between more than one pool during the start-up process. The documentation on http://ucwa.lync.com is light on this area, and the provided UCWA sample does not handle this scenario directly. If you do not properly handle the web ticketing during pool…
Read More UCWA with directors or multiple pools