No meetings option in Lync client

Hi I recently installed Lync 2013 server. In LAN I have lync.doamin.local certificate and outside I have public one. Users started using Lync. We wanted to test it and 3 people wanted to join.
I noticed several issues.
1. From within the lan - from the pc that is domain joined where office 2010 and lync 2013 are installed when user follows the link for the meeting, Chrome opens and it wants to install web client - which at the end is forbidden by admin. So although there
is a lync client present and user is signed in - meeting lync wouldn't open with lync client.
I tried the same with internet explorer but I white page opens with only Lync written and language choice.
In registry there is entry for Explorer to start automatically for a=Lync.exe ....
How to open lync client automatically?
2. Lync client installed on domain joined machine I don't have meeting button - just contacts, conversations and phone.
How to enable this button??
3. From within the lan - from the pc that is not domain joined I am getting certificate error that cannot be checked and that is not to be trusted.
How to overcome certificate issue?
Can you please advice? Thanks

Hi MrAlexandar,
As for your questions:
1. Is the meeting URL like this
https://meet.domain.com/xxx/xxxxxxx?sl=1 ?
If this is the case, please remove “ ?sl=1 “ and retry.
2. Install the latest update for Lync 2013.
And also install the update KB2837643 which includes the image dll files needed.
A similar case:
https://social.technet.microsoft.com/Forums/lync/en-US/d9bdca05-ec90-4eb8-af2b-c3c9e2352eb6/lync-client-2013-meeting-icon-disappear?forum=lyncprofile
3. Do you mean that the user cannot sign in Lync ?
If this is the case, please install the root certificate on the computer.
Best regards,
Eric
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact [email protected]

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No meetings option in Lync client

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