JCIFS: Possibly transient exception detected on attempt 1 while getting share security: All pipe instances are busy

[Bisonti Mario]

Hi.
Often, I obtain the error:

WARN 2023-01-18T06:18:19,316 (Worker thread '89') - JCIFS: Possibly transient 
exception detected on attempt 1 while getting share security: All pipe 
instances are busy.
jcifs.smb.SmbException: All pipe instances are busy.
        at jcifs.smb.SmbTransportImpl.checkStatus2(SmbTransportImpl.java:1441) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.smb.SmbTransportImpl.checkStatus(SmbTransportImpl.java:1552) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.smb.SmbTransportImpl.sendrecv(SmbTransportImpl.java:1007) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.smb.SmbTransportImpl.send(SmbTransportImpl.java:1523) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.smb.SmbSessionImpl.send(SmbSessionImpl.java:409) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.smb.SmbTreeImpl.send(SmbTreeImpl.java:472) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.smb.SmbTreeConnection.send0(SmbTreeConnection.java:399) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.smb.SmbTreeConnection.send(SmbTreeConnection.java:314) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.smb.SmbTreeConnection.send(SmbTreeConnection.java:294) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.smb.SmbTreeHandleImpl.send(SmbTreeHandleImpl.java:130) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.smb.SmbTreeHandleImpl.send(SmbTreeHandleImpl.java:117) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.smb.SmbFile.openUnshared(SmbFile.java:665) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.smb.SmbPipeHandleImpl.ensureOpen(SmbPipeHandleImpl.java:169) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.smb.SmbPipeHandleImpl.sendrecv(SmbPipeHandleImpl.java:250) 
~[jcifs-ng-2.1.2.jar:?]
        at 
jcifs.dcerpc.DcerpcPipeHandle.doSendReceiveFragment(DcerpcPipeHandle.java:113) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.dcerpc.DcerpcHandle.sendrecv(DcerpcHandle.java:243) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.dcerpc.DcerpcHandle.bind(DcerpcHandle.java:216) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.dcerpc.DcerpcHandle.sendrecv(DcerpcHandle.java:234) 
~[jcifs-ng-2.1.2.jar:?]
        at jcifs.smb.SmbFile.getShareSecurity(SmbFile.java:2337) 
~[jcifs-ng-2.1.2.jar:?]
        at 
org.apache.manifoldcf.crawler.connectors.sharedrive.SharedDriveConnector.getFileShareSecurity(SharedDriveConnector.java:2468)
 [mcf-jcifs-connector.jar:?]
        at 
org.apache.manifoldcf.crawler.connectors.sharedrive.SharedDriveConnector.getFileShareSecuritySet(SharedDriveConnector.java:1243)
 [mcf-jcifs-connector.jar:?]
        at 
org.apache.manifoldcf.crawler.connectors.sharedrive.SharedDriveConnector.processDocuments(SharedDriveConnector.java:647)
 [mcf-jcifs-connector.jar:?]

So, I have to stop the agent, restart it, and the crwling continues.

How could I solve my issue?
Thanks a lot.
Mario