IllegalPathException with AEM 6.6.2

Question

My local instance of AEM 6.6.2 (6.5 lts sp2) runs on a Windows computer. I’m using Java21. When I install a content package with DAM assets, my local file error.log will be flooded with following error message:

java.nio.file.InvalidPathException: Illegal char <:> at index 39: /content/dam/940x530.jpg/jcr:content/jcr:lastModifiedBy
at java.base/sun.nio.fs.WindowsPathParser.normalize(WindowsPathParser.java:204)

According the Internet, the method function WindowsPathParser is internal used by Java’s Path.of()

How can I fix this?

shrutid56001193 · Accepted Answer

@Magicrthanks for the details.Sincethe package installs successfully and the DAM assets can be opened afterwards, so there doesn't appear to be a functional impact.This appears to be a benign Windows-specific error in AEM Sites Eventing.The : in:jcr:contentjcr:lastModifiedByis completely valid in a JCR path. But Java's Windows Path implementation treats : as an illegal filesystem-path character, hence:sun.nio.fs.WindowsPathParser.normalize()The fact that the asset installs successfully and is accessible afterwards reinforces that the exception is happening while an observation event is being dispatched, not while AEM is actually persisting the asset.And the logtells us exactly that:org.apache.jackrabbit.oak.jcr.observation.ChangeProcessor→com.adobe.aem.sites.eventing.impl.observers.JcrListener​About the log flooding - It would be worth checking with Adobe whether this is a known issue with the Sites Eventing bundle on Windows and whether a newer/fixed bundle is available.

Magicr · Answer

Here the complete Line in error.log:2026-08-25T16:23:26.236+02:00 WARN o.a.j.o.jcr.observation.ChangeProcessor --- [sling-oak-observation-3] {} : Error while dispatching observation events for //*[111111b]@com.adobe.aem.sites.eventing.impl.observers.JcrListener$$Lambda/0x0000022f81a978e8java.nio.file.InvalidPathException: Illegal char <:> at index 39: /content/dam/940x530.jpg/jcr:content/jcr:lastModifiedBy  at java.base/sun.nio.fs.WindowsPathParser.normalize(WindowsPathParser.java:204)

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