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Attempts to start ClearCase results in "Error: missing dll xml4c_5_6.dll"



Attempts to start up IBM Rational ClearCase or other products in the IBM Rational Tools suite following a new installation results in "Error: missing dll xml4c_5_6.dll".


Starting ClearCase or other products in the Rational Tools suite, following a new install of the Rational Tools (version 7.1.1), results in the following error:

Error: missing dll xml4c_5_6.dll


The dll file xml4c_5_6.dll is missing from the \bin directory in the path C:\Program Files\IBM\RationalSDLC\ClearCase\bin.

Cause 1:
An incorrect installation failed to copy the DLL file to the correct location.

Cause 2:
The path length to the \ClearCase directory is longer than 256 characters. In this circumstance the DLL file may not copy to the \bin directory as expected.

Diagnosing The Problem

Count the character length of the path up to the \ClearCase directory to see if it is greater than 256 characters.

Resolving The Problem

Match the corresponding solution to the Cause above to resolve the issue:

Solution 1:

Copy the xml4c_5_6.dll file from C:\Program Files\IBM\RationalSDLC\Common to C:\Program Files\IBM\RationalSDLC\ClearCase\bin.

Solution 2:

If the path to the ClearCase directory is more than 256 characters you should reduce the installation path length less than 256 characters.

Internal Use Only

This technote was generated by Technote Kickstart based off of Rational Customer Support PMR #70188,003,756

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Document Information

Modified date:
16 June 2018