# java.lang.IllegalArgumentException: NTFS ADS separator (‘:’) in file name is forbidden.

## post by ulf.leonhardt on Nov 18, 2024

Ulf Leonhardt

Hi,

I am running Sonatype Nexus Repository OSS 3.69.0-02 on Windows.  
I have set up a proxied Helm repo for the Bitnami helm charts (source [https://charts.bitnami.com/bitnami](https://charts.bitnami.com/bitnami)). This was working fine.

Starting from today (18.11.2024), I can’t download the index.yaml from Nexus anymore, I get a file of length 0. In the log I see a message “java.lang.IllegalArgumentException: NTFS ADS separator (‘:’) in file name is forbidden.”

Has anybody else seen this problem? Is there a workaround?

Many thanks  
Ulf

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## post by mpiggott on Nov 19, 2024

Matthew Piggott

This may be a bug, I’d suggest checking [Issues · sonatype/nexus-public · GitHub](https://github.com/sonatype/nexus-public/issues)

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