Unable to reconfigure ITCAM for RT/Transactions KT3/T3 agent

C:\Program Files\IBM\Tivoli\common\BWM\logs\Trace-dashboard.log file contains error below:
- MIN - Thread-3 -
com.ibm.tivoli.transperf.core.util.crypto.CryptoUtil.decryptPassword(String encryptedPassword, String keyFilesDir) -
java.lang.SecurityException: Unsupported keysize or algorithm parameters
at javax.crypto.Cipher.init(Unknown Source)
at candle.kjr.util.CRYPTO.readKeyFile(CRYPTO.java:1026)
at candle.kjr.util.CRYPTO.getSecretKey(CRYPTO.java:1080)
at candle.kjr.util.CRYPTO.decrypt(CRYPTO.java:390)
at com.ibm.tivoli.transperf.core.util.crypto.CryptoUtil.decryptPassword(CryptoUtil.java:69)
at com.ibm.tivoli.transperf.dashboard.Dashboard.getDecryptedPassword(Dashboard.java:371)
at com.ibm.tivoli.transperf.dashboard.Dashboard.getConfigProperty(Dashboard.java:167)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:85)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:58)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:60)
at java.lang.reflect.Method.invoke(Method.java:391)
at mx4j.server.ReflectionMBeanInvoker.invokeImpl(ReflectionMBeanInvoker.java:156)
at mx4j.server.ReflectionMBeanInvoker.doInvoke(ReflectionMBeanInvoker.java:117)
at mx4j.server.ReflectionMBeanInvoker.invoke(ReflectionMBeanInvoker.java:52)
at mx4j.server.interceptor.InvokerMBeanServerInterceptor.invoke(InvokerMBeanServerInterceptor.java:238)
at mx4j.server.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:120)
at mx4j.server.interceptor.SecurityMBeanServerInterceptor.invoke(SecurityMBeanServerInterceptor.java:84)
at
mx4j.server.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:120)
at
mx4j.server.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:120)
at mx4j.server.interceptor.ContextClassLoaderMBeanServerInterceptor.invoke(
ContextClassLoaderMBeanServerInterceptor.java:203)
at mx4j.server.MX4JMBeanServer.invoke(MX4JMBeanServer.java:1043)
at com.ibm.tivoli.transperf.dashboard.SubnodeInit.<clinit>(SubnodeInit.java:117)

Incompatibility between the encryption level used to store the password in keyfiles keystore and the encryption level used to retrieve the password.

To correct the problem, copy the attached zip file, which contains 2 JCE policy files, into the following directory:

C:\Program Files\IBM\Java142\jre\lib\security

Make a safe copy of the following files:

C:\Program Files\IBM\Java142\jre\lib\security\local_policy.jar
C:\Program Files\IBM\Java142\jre\lib\security\US_export_policy.jar

Extract the files from JCEPolicy142.zip

Stop and restart the End User Response Time Dashboard (T3).

If this does not solve the problem, restart the whole ITM environment including the TEMS, TEPS etc. The easiest option would be to reboot the machine(s).