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Ricoh MFP Java Client Cannot Connect to Server Network Problem or Disk Full

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Article # 3035879 - Page views: 69

Article # 3035879 - Page views: 69

Issue

Attempts to connect to the KFS server from the Ricoh MFP (Java) Client result in the following error:

Cannot connect to server. There is a network problem, or the disk on the server is full.

 

Cause

The Kofax Ricoh Java Client's Cannot connect to server error can be triggered by a number of root causes.

Known root causes include:

  • Incorrect server URL in KofaxRicohClient.dalp file
  • Device cannot successfully use DNS to resolve the hostname or Fully Qualified Domain Name of the KFS server
  • Connection refused by KFS server due to insufficient free space on server or Capture share
  • HTTPS connection fails due to server configured for HTTP only
  • HTTPS connection fails due to TLS version mismatch
  • HTTPS connection fails due to TLS Cipher Suite mismatch
  • HTTPS connection fails due to Current Server SSL certificate not stored in Client keystore

 

Solution

To troubleshoot and resolve Ricoh MFP Java Client connection issues:

  1. Confirm that the server URL is correct in the KofaxRicohClient.dalp file
     
  2. Configure Ricoh MFP Device DNS settings
     
  3. Confirm that the KFS server and Capture share have sufficient available free space
     
  4. (HTTP only)  Configure Ricoh MFP Client to use HTTP communication with server
     
  5. (HTTPS only)  Configure the KFS server to accept communication over HTTPS
     
  6. (HTTPS only)  Use Wireshark to Troubleshoot Problems with TLS Handshake
     
  7. (HTTPS only)  Determine which TLS version(s) the device can support and configure the device to use at least one TLS version that is enabled on the server
     
  8. (HTTPS only)  Determine which TLS version(s) are enabled on the server and configure the server to use at least one TLS version that the device can support 
     
  9. (HTTPS only)  Determine which TLS Cipher Suites the device can support and configure the device to use at least one Cipher Suite that is enabled on the server
     
  10. (HTTPS only)  Determine which TLS Cipher Suites are enabled on the server and configure the Enablement and Order of the Cipher Suites to prioritize at least one Cipher Suite that the device can support
     
  11. Add Server Certificate to Ricoh MFP Java Client Keystore

 

Level of Complexity 

High

 

Applies to  

Product Version Build Environment Hardware
Kofax Front Office Server 4.3
4.1		 ALL ALL Ricoh MFP Devices

References