Issue: Unable to sign-in
on Lync.
Error:
1.
There was a problem
acquiring a personal certificate required to sign in. If the problem continues,
please contact your support team.
2. Cannot sign in to Lync. You may have entered your sign-in address,
user name, or password incorrectly, or the authentication service may be
incompatible with this version of the program. If your sign-in information is
correct and the problem persists, please contact your system administrator.
Problem Statement:
When you are trying
to sign-in on Lync you may receive above errors. There error look like big
however resolution is very simple. After look error message it might you are
using wrong sign-in information.
Also Lync 2013 caches the login credential and Lync 2010 keep connection information that will also causes.
Resolution:
New thing about Lync 2013 is caches your login credentials
and other information about its connection to Lync Online.
When
Lync 2010 connects to a specific front-end server, it caches that endpoint to
make the sign-in process faster in the future.
If you have
trouble signing in to Lync Online,
1.
Open Lync 2013.
2.
Click Delete my sign-in information
and Lync 2013 will automatically remove any saved password, certificates, and
connection settings for the user account.
3.
Then try to sign-in on Lync.
If issue persists
then do the following.
Sometimes the
endpoint can be changed and can cause sign-in to fail. To delete the endpoint
cache, follow these steps:
1.
Locate
the local application data folder:
o
Windows
Vista, Windows 7 and Windows 8 (excluding Windows 8 RT):
%LOCALAPPDATA%\Microsoft\Communicator\\
o
Windows
XP:
%USERPROFILE%\Local Settings\Application
Data\Microsoft\Communicator\\
2.
Delete
the folder associated with the user’s Session Initiation Protocol (SIP)
address.
3.
Restart
Lync 2010, and then try to sign in to Lync Online.
Thank you.
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