topic Re: ruxitagentjs is blocked in Real User Monitoring

Ruxitagentjs is blocked

Mizső — Wed, 10 Dec 2025 14:46:24 GMT

Hi Folks,

How can we identify why the ruxitagentjs is blocked? Could be a desktop security protection tool? I have only a screenshot from the client nothing else...

Thanks in advance.

János

Re: ruxitagentjs is blocked

ChadTurner — Fri, 25 Apr 2025 14:22:49 GMT

@Mizső
I would have them extract the HAR file to send along to support, but also I recommend using the OneAgent health checker.

Which will help you collect the needed information for support:

This allows the support team to detect what host/process is serving up the injection and will help identify the blocking in conjunction with the supplied HAR file.

Re: ruxitagentjs is blocked

Mizső — Fri, 25 Apr 2025 15:22:46 GMT

Hi @ChadTurner ,

Thanks, I am going to check it.

Best regards,

János

Re: ruxitagentjs is blocked

AntonioSousa — Fri, 25 Apr 2025 21:39:20 GMT

@Mizső,

Beware, some browser extensions block ruxitagentjs*

Re: ruxitagentjs is blocked

cvdewr — Mon, 28 Apr 2025 01:13:13 GMT

yeah I've seen "uBlock Origin" extension blocking the RUM agent JS by default (the default block lists include most monitoring agents). If it's for internal users, get the IT/desktop whichever team maintains the SOE/browser config to deploy an allow list for your internal URIs.

Nothing you can do for external/public users if they have extensions blocking things.

Re: ruxitagentjs is blocked

Mizső — Tue, 29 Apr 2025 08:21:05 GMT

Hi Folks,

It was "uBlock Origin"...

Thanks for your help.

Best regards,

János

Re: ruxitagentjs is blocked

cvdewr — Tue, 29 Apr 2025 23:29:16 GMT

For systems you can control...

I've put together this allowlist config for uBlock Origin. This allows the agent script on any site.

uBlock Allowlist entry for Dynatrace RUM agent.

!Dynatrace RUM agent
@@||/ruxitagentjs_*.js$script

Re: ruxitagentjs is blocked

AntonioSousa — Tue, 29 Apr 2025 23:38:22 GMT

Yep, great! Have been using it also, and it's ancestors for more than a decade now 😁

Re: ruxitagentjs is blocked

Mizső — Wed, 30 Apr 2025 07:03:25 GMT

Hi @cvdewr,

Thanks for sharing it. I have already passed to my client.

Best regards,

János