(long tweet) Undeploy issue with Tomcat on Windows
Case
I had the following issue: when I undeployed the WAR from Tomcat using the manager instance, the undeploy failed. As a workaround, I had to restart Tomcat for the undeploy to be taken in account.
This issue occured only in Windows ; when the exact same WAR and the same version of Tomcar on Debian, I was able to deploy and undeploy many times.
Quick Fix
In the %CATALINA_HOME%\conf\context.xml, replace:
<Context>
with:
<Context antijarlocking="true" antiResourceLocking="true"/>