Communication Error between PM and Active Directory

Hello,

i have a problem with my Active Directory integration, in Policy Manager.

After the installation, authentification works fine with AD, i can login to the GUI with my AD login.

But after few times, the connection to AD is closed and never open again.

I turn log files to verbose, and i found error messages, like this

déc. 12, 2016 9:40:26 AM org.apache.catalina.realm.JNDIRealm authenticate

WARNING: Exception pendant le traitement de l''authentification

javax.naming.CommunicationException: Connection reset [Root exception is java.net.SocketException: Connection reset]; remaining name 'OU=toto,OU=Users,OU=company,DC=domain,DC=fr'

   at com.sun.jndi.ldap.LdapCtx.doSearch(Unknown Source)

    at com.sun.jndi.ldap.LdapCtx.searchAux(Unknown Source)

   at com.sun.jndi.ldap.LdapCtx.c_search(Unknown Source)

    at com.sun.jndi.toolkit.ctx.ComponentDirContext.p_search(Unknown Source)

    at com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.search(Unknown Source)

    at com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.search(Unknown Source)

    at javax.naming.directory.InitialDirContext.search(Unknown Source)

    at org.apache.catalina.realm.JNDIRealm.getUserBySearch(JNDIRealm.java:1440)

    at org.apache.catalina.realm.JNDIRealm.getUser(JNDIRealm.java:1291)

    at org.apache.catalina.realm.JNDIRealm.getUser(JNDIRealm.java:1247)

    at org.apache.catalina.realm.JNDIRealm.authenticate(JNDIRealm.java:1188)

    at org.apache.catalina.realm.JNDIRealm.authenticate(JNDIRealm.java:1046)

I have installed PM on Windows Server 2012 R2 64bits.

I have installed PM on Linux 64bits, and i have the same issue.

Anyone have an idea ?

Regards,

Charles