Monday, November 3, 2014

Yet another fix for Lync 2013 or Skype 2016 - the server is temporarily unavailable error

I ran into this one on a 365 hosted, AD FS authenticated system with users running Lync 2013. Several users just suddenly started getting this error at random but it would only affect that profile on each machine.  If the same user logged in from a local profile or another domain profile then Lync would log in fine.  And if you torched the whole cached profile and forced a new profile load, Lync would work fine as well.
After having tried multiple Microsoft provided resolutions of deleting Lync profiles, temporary folders, cryptography keys, accountprofile.dat, delete sign-in info, etc., their support team had us kill the Lync process completely and then delete the whole
HKCU\Software\Microsoft\MSOIdentityCRL key
and then start up Lync.  And then it started working properly and we replicated the fix on the remaining affected profiles.

Friday, May 23, 2014

Lync 2013 android client error connecting to ADFS 3.0 federated 365 service

So after our migration to ADFS 3.0 from the old ADFS 2.0 servers my Android based Lync users started getting we can't sign you in, please try again errors during login.  After digging around I found this forum entry from Jeffr.M which points out that the Lync android app has an issue with servers that can support multiple certificates on the same IP.

The following command adds a new default catch-all listener to your server.  If you're using a Web Application Proxy like I am you'll want to run this on that server as well.

netsh http show sslcert

The command above will show you all the listeners and their associated certificate hashes and application IDs.  You'll need those for the next step.

netsh http add sslcert ipport= certhash=INSERTHASHHERE appid='{INSERTAPPIDHERE}'

Note the ticks around the appid.  Powershell sometimes eats curly brackets so you'll get an error if you don't use the "'" marks.  More info here

Note 2: If you're thinking it's easier to just copy/paste the certificate hash from the MMC Certificates panel - Don't. That method often introduces hidden characters which will take forever to debug.

After you do that on your ADFS 3.0 and WEP servers, restart the ADFS services on them and then your Android Lync clients will start working again.

On a related note, if your Onedrive authentication isn't working - try disabling the /adfs/services/trust/2005/windowstransport endpoint.  (disable on proxy if using a proxy or just disable both modes just in case).  There's a bug with the windowstransport endpoint in ADFS 3.0 and Onedrive authentication.

Tuesday, January 7, 2014

Fix for Wake after sleep freeze on Dell Latitudes

This turned out to be an issue with the O2Micro SD/MMC drivers on the E6420/E6430 units that we had. After adding new drivers to our MDT server I started getting reports from users stating that their laptops were completely freezing up after waking from sleep - no response to keyboard, mouse, etc.  No mini dumps were generated, powercfg - energy didn't show any major issues, and event viewer was useless.  It was occuring both on Windows 7 and Windows 8.1 builds.

It wasn't until after I started disabling hardware components in Device Manager that I found a correlation between disabling the O2Micro SD/MMC controllers and it being able to wake from sleep.  (I rebooted after each diagnostic test just to make sure all changes were in full effect)

Installing an older version of the driver and rebooting fixed the problem on all the laptops that were having the hang issue.  Of course, just disabling the SD/MMC controllers is a fine fix too.