Sometimes, on windows machines with anti-virus software running, I have seen the below error with the TZUpdater tool.
[This happens only with JDK 6 and JDK7 where tzdata information is written to "zi" folder, unlike in JDK8 and above it is stored in a file named- tzdb.dat]

Using https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz as source for tzdata bundle.
java.home: D:\Tools\TZupdater\jdk1.6.0_191\jre
java.vendor: Sun Microsystems Inc.
java.version: 1.6.0_191
tzupdater version 2.2.0-b01
JRE tzdata version: tzdata2018c
Downloaded file to C:\cygwin64\tmp\tz.tmp_6\tzdata.tar.gz
javazic: warning: found last rules for Eire inconsistent.
tzupdater tool would update with tzdata version: tzdata2018e
Extracting files... done.
Renaming D:\Tools\TZupdater\jdk1.6.0_191\jre\lib\zi to D:\Tools\TZupdater\jdk1.6.0_191\jre\lib\zi.tzdata2018c
Renaming D:\Tools\TZupdater\jdk1.6.0_191\jre\lib\zi.tzdata2018e to D:\Tools\TZupdater\jdk1.6.0_191\jre\lib\zi
failed.
Can't rename D:\Tools\TZupdater\jdk1.6.0_191\jre\lib\zi.tzdata2018e to D:\Tools\TZupdater\jdk1.6.0_191\jre\lib\zi.
Restoring the saved time zone data... done.
Exception in thread "main" com.sun.tools.tzupdater.TzRuntimeException: com.sun.tools.tzupdater.TzRuntimeException: done.
        at com.sun.tools.tzupdater.TimezoneUpdater.main(TimezoneUpdater.java:655)
Caused by: com.sun.tools.tzupdater.TzRuntimeException: done.
        at com.sun.tools.tzupdater.TimezoneUpdater.update(TimezoneUpdater.java:318)
        at com.sun.tools.tzupdater.TimezoneUpdater.run(TimezoneUpdater.java:258)
        at com.sun.tools.tzupdater.TimezoneUpdater.main(TimezoneUpdater.java:636)