Lync 2010 & 2013 Co-existence, After Moving fileshare clients are prompting for Credentials for RGS

Hello,
I am in middle of migration from lync 2010 to 2013. At the moment both enviroments are in Co-existense state, Got pools on both enviroments, however all users are moved to 2013 pool already. Also edge has been migrated already to 2013, and it seems to work
fine (except mobility).
Last Friday I decided to move the lyncshare from old server to new one (both servers were using same lyncshare on old server). I was using this guide: http://technet.microsoft.com/en-us/library/gg195742%28v=ocs.14%29.aspx and all were working pretty fine.
When about hour was passed after last steps, problems started to occur. All clients are asking for credentials to RGS, nowhere else. Entering credentials won't help, prompt appears again. If i cancel the prompt, lync works, but shows error in lower right corner:
Cannot synchronize addressbook (or something similar). Checking connection configuration from client shows that EWS is not deployed, which has been deployed.
I have also checked twice that the permissions are right on lyncshare.
Where should i start to look a solution for the problem ? Seems bit odd that moving a share kinda breaks whole system.

Hello,
Apparently the problem this time is not the Lync, but Exchange. As we are having Exchange migration on the same domain at the same time, I were troubleshooting the problem more, and found out that Lync Client is configured to use EWS Internal & External
url in "https://server005.domain.local/ews/exchange.asmx" , but when opening the url i receive the followin page:
and syntax is: svcutil.exe "https://server014.domain.local:444/EWS/Services.wsdl" , so If i understood right, the problem is in exchange, not in Lync at the moment.
About errors in FE Event Viewer, There is one error repeating often, have not found a solution yet.
Best Regards
Jaakko

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