What does Windows error code 1238 (ERROR_CONNECTION_COUNT_LIMIT) mean?

 
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ERROR_RETRY ERROR_LOGIN_TIME_RESTRICTION

ERROR_CONNECTION_COUNT_LIMIT

The scope in this error is the account. That distinguishes it from ERROR_REQ_NOT_ACCEP, which describes the remote computer accepting no more connections, and from ERROR_REMOTE_SESSION_LIMIT_EXCEEDED, which describes a server session limit. Troubleshooting should therefore group connections by identity.

Look for applications that create parallel connections under the same account or reconnect without releasing prior state. On SMB systems, identify the authenticated session/account and the server-side connection objects associated with it. Raising a global server limit may not change an account-specific restriction.

Account-scoped checks

  • Count concurrent connections for the exact account used by the failing client.
  • Compare another account against the same server at the same time.
  • Inspect idle/reconnect behavior and connection teardown.
  • Verify the server policy or product limit that applies to the account before changing capacity.

MS-SMB2 network disconnect handling · Samba smbclient manual · Samba smb.conf manual


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