Error "A potential security problem was detected" in Windchill PDMLink

• Windchill is reporting Cross-Site Request Forgery (CSRF) Security errors, for example:
• When accessing the part structure page, it will show (CSRF) Security errors. it needs to refresh many times to recover this page
• Users are reporting pop-up warnings in the UI with the error:

A potential security problem was detected. Refresh the page and try again. If the problem persists, contact your administrator

• In the Windchill Method Server logs there are errors similar to:

<Date/Time>,331 ERROR [ajp-bio-8010-exec-1] com.ptc.jca.mvc.controllers.ActionController wcadmin - (com.ptc.core.appsec.appSecResource/INVALID_NONCE) com.ptc.core.appsec.ApplicationSecurityException: A potential security problem was detected. Refresh the page and try again. If the problem persists, contact your administrator.

(com.ptc.core.appsec.appSecResource/INVALID_NONCE) com.ptc.core.appsec.ApplicationSecurityException: A potential security problem was detected. Refresh the page and try again. If the problem persists, contact your administrator.

at com.ptc.core.appsec.CSRFProtector.handleInvalidNonce(CSRFProtector.java:249)
at com.ptc.core.appsec.CSRFProtector.checkNonce(CSRFProtector.java:216)

• In the Security Audit Reports there are Events of Type "Cross-Site Request Forgery"
• "com.ptc.cat.ops.client.internal.ClearCollectorCacheOperation A potential security problem was detected. Refresh the page and try again. If the problem persists, contact your administrator" exception occurred on Part Structure veiw page
• Error in MS logs while Searching the Keyword which has special characters like "*", "?"

error:-------------(com.ptc.core.appsec.appSecResource/INVALID_NONCE) com.ptc.core.appsec.ApplicationSecurityException: A potential security problem was detected. Refresh the page and try again. If the problem persists, contact your administrator.
(com.ptc.core.appsec.appSecResource/INVALID_NONCE) com.ptc.core.appsec.ApplicationSecurityException: A potential security problem was detected. Refresh the page and try again. If the problem persists, contact your administrator.
	at com.ptc.core.appsec.CSRFProtector.handleInvalidNonce(CSRFProtector.java:316)
	at com.ptc.core.appsec.CSRFProtector.checkNonce(CSRFProtector.java:252)
	at com.ptc.jca.mvc.controllers.Log4JavascriptController.logData(Log4JavascriptController.java:96)
	at sun.reflect.GeneratedMethodAccessor620.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1067)
	at org.springframework.w