Forum Discussion

Copper Contributor

Oct 17, 2017

"Network Unavailable"

I seem to have a strange issue. Really hard to search for this because the error being stated doesn't match what is going on. When I try to use Skype for business on my work computer it states "...

Deployment & Operations

Desktop Client

Instant Messaging & Presence

Sign-in

thet naing

Iron Contributor

Oct 18, 2017

I see, you mentioned all other users are able to login, only from your PC, right? It looks like it's DNS/network related issue.

1. Please check if your account is "enabled/provisioned" in your SFB server?

2. It looks like your PC is not able to reach or make a successful SFB server auto-discovery. Did you set any manual SFB server under "Options > Personal > Advanced Connection Setting?

2.1 A quick way to check and verify is compare your PC's Network settings, for example, subnet, gateway and DNS against another working PC's.

3. Download Lync Connectivity Analyzer here https://1drv.ms/f/s!AvBNRjYUuhsvjbtI7W-J2JRe7MtaPw and follow this guide to check what exactly went wrong.

https://ucmart.uk/2017/07/04/copy-of-lync-connectivity-analyzer-download-link/

4. Are you able to login using your mobile phone or from outside of your office network, like from your home?

thet naing

Iron Contributor

Oct 19, 2017

I simulated your issue, I got the exact same issue when my Wireless Network is down - basically means the network your PC is connected is not able to reach to or resolve to SFB server.

You need to check with your network engineer/team.

Allen Hood
Copper Contributor
Oct 19, 2017
Thet Naing,

I am working on a workstation that doesn't use Wireless. It doesn't even have Wireless capability. I do agree that this has something to do with the PC not able to resolve to the Skype For Business server. The computer I am working on does have Internet connectivity and can connect to other parts of the network it is connected to.