Hello everyone,

Im not sure if this is the right location for this but I will try and hopefully get sent in the right direction.

The issue I am experiencing is that a few users on Lync for Mac 2011 (14.1.1 or lower) have issues sending and receiving files.

Sending files: Users will try to send an attachment via the Lync for Mac client and their IM window will turn completely white but the file will send to the other user. Causing them to lose the previous chat and all other chat after that unless they close and reopen the window. 

This happens to the user sending the file to another Mac user or Windows user.

Receiving files: When the Mac user receives a file it will just say "User sent file..." and give them no option to accept or decline.

Things I have done: Uninstalled Lync and reinstalled Lync. No success.

Are you running the latest and greatest update? https://support.microsoft.com/en-us/kb/3074981  Other than that, there's no much tweaking you can do within the Lync client for Mac that would cause or fix this that I'm aware of.  Does it happen on all machines?

Are you running the latest and greatest update? https://support.microsoft.com/en-us/kb/3074981  Other than that, there's no much tweaking you can do within the Lync client for Mac that would cause or fix this that I'm aware of.  Does it happen on all mac

Yeah, "greatest" is a bit tongue in cheek.  Nobody is in love with the Lync client for Mac.  There's a ton of feedback on it and Microsoft has decided to rewrite it from scratch.  We should see it late this year (fingers crossed) or early next.  I don't know of any setting and switch you could flip, I'd just see if you can spot some sort of difference between a working and non-working machine. 

Hi,

1. Make sure Mac update to the latest version.

2. Try to clean uninstall Lync for Mac completely with the help of the link below:

https://support.microsoft.com/en-us/kb/2691870

Best Regards,
Eason Huang