I’ve been asked quite a few times over the last few months about issues signing into Lync with the mobile client on smartphones so I thought it would be a good idea to write a short post for anyone new to the client and have problems signing in.
You’ve deployed Lync Server 2010 Mobility Service and began testing with corporate smartphones but when you sign in, you receive the following error:
Can’t sign in. Please check your account information and try again.
I found this is one of the most asked questions I get from users who are testing this and the reason why the device is unable to sign is in because the user name settings requires the domain to be included. Begin by going into the options of the mobile app:
Then proceed to edit the User name field:
Enter the domain name and user name in the format: domain\username:
Proceed with signing in once the correct user name has been entered:
The mobile application should now be able to sign in: