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    <title>topic The caller was not authenticated by the service - Connect to BP Server in Product Forum</title>
    <link>https://community.blueprism.com/t5/Product-Forum/The-caller-was-not-authenticated-by-the-service-Connect-to-BP/m-p/85417#M36414</link>
    <description>Hi all,

I have an issue when trying to connect to the BP Server from the Runtime Resource. (BP version v6.3.0)

What I have :

- 'WCF - SOAP with Message Encryption &amp;amp; Windows Authentication' connection mode

- Port 8199 is open and available from Application Server side

- I managed to connect to the BP Server from 2 specific laptops (2 specific IPs), but I can't connect from the rest of the machines

I am getting 'The caller was not authenticated by the service', which obviously has to do with authentication part of the connection.
But how am I able to connect from some of the IPs and from some other not? (they are all in the same VLAN)

Note: I tried temporarily to switch the connection mode to 'WCF - Insecure' and the connection from all the machines was fine, but obviously I can't use this type of connection in a enterprise environment.

Any ideas?

I would really appreciate your feedback on this one.

Thanks,
Konstantinos Vogiatzakis

&amp;nbsp;</description>
    <pubDate>Fri, 25 Jan 2019 19:15:00 GMT</pubDate>
    <dc:creator>KonstantinosVog</dc:creator>
    <dc:date>2019-01-25T19:15:00Z</dc:date>
    <item>
      <title>The caller was not authenticated by the service - Connect to BP Server</title>
      <link>https://community.blueprism.com/t5/Product-Forum/The-caller-was-not-authenticated-by-the-service-Connect-to-BP/m-p/85417#M36414</link>
      <description>Hi all,

I have an issue when trying to connect to the BP Server from the Runtime Resource. (BP version v6.3.0)

What I have :

- 'WCF - SOAP with Message Encryption &amp;amp; Windows Authentication' connection mode

- Port 8199 is open and available from Application Server side

- I managed to connect to the BP Server from 2 specific laptops (2 specific IPs), but I can't connect from the rest of the machines

I am getting 'The caller was not authenticated by the service', which obviously has to do with authentication part of the connection.
But how am I able to connect from some of the IPs and from some other not? (they are all in the same VLAN)

Note: I tried temporarily to switch the connection mode to 'WCF - Insecure' and the connection from all the machines was fine, but obviously I can't use this type of connection in a enterprise environment.

Any ideas?

I would really appreciate your feedback on this one.

Thanks,
Konstantinos Vogiatzakis

&amp;nbsp;</description>
      <pubDate>Fri, 25 Jan 2019 19:15:00 GMT</pubDate>
      <guid>https://community.blueprism.com/t5/Product-Forum/The-caller-was-not-authenticated-by-the-service-Connect-to-BP/m-p/85417#M36414</guid>
      <dc:creator>KonstantinosVog</dc:creator>
      <dc:date>2019-01-25T19:15:00Z</dc:date>
    </item>
    <item>
      <title>Would like to hear the…</title>
      <link>https://community.blueprism.com/t5/Product-Forum/The-caller-was-not-authenticated-by-the-service-Connect-to-BP/m-p/85418#M36415</link>
      <description>Would like to hear the solution to this.&amp;nbsp; We have a similar issue.</description>
      <pubDate>Fri, 15 Feb 2019 05:18:00 GMT</pubDate>
      <guid>https://community.blueprism.com/t5/Product-Forum/The-caller-was-not-authenticated-by-the-service-Connect-to-BP/m-p/85418#M36415</guid>
      <dc:creator>MikeMiller</dc:creator>
      <dc:date>2019-02-15T05:18:00Z</dc:date>
    </item>
    <item>
      <title>Hi everyone,
I'm also…</title>
      <link>https://community.blueprism.com/t5/Product-Forum/The-caller-was-not-authenticated-by-the-service-Connect-to-BP/m-p/85419#M36416</link>
      <description>Hi everyone,
I'm also currently getting the same error. I, unfortunately, am not able to connect with any interactive clients or runtime resources.
I'm able to get it running using&amp;nbsp;.net remoting insecure/secure and using wcf insecure.
Have you guys found any solutions to the problem?
Error Message:
System.ServiceModel.Security.SecurityNegotiationException: The caller was not authenticated by the service. ---&amp;gt; System.ServiceModel.FaultException: The request for security token could not be satisfied because authentication failed.
Thanks,
Anthony</description>
      <pubDate>Thu, 21 Mar 2019 01:08:00 GMT</pubDate>
      <guid>https://community.blueprism.com/t5/Product-Forum/The-caller-was-not-authenticated-by-the-service-Connect-to-BP/m-p/85419#M36416</guid>
      <dc:creator>AnthonyCamargo</dc:creator>
      <dc:date>2019-03-21T01:08:00Z</dc:date>
    </item>
    <item>
      <title>Anyone got solution for the…</title>
      <link>https://community.blueprism.com/t5/Product-Forum/The-caller-was-not-authenticated-by-the-service-Connect-to-BP/m-p/85420#M36417</link>
      <description>Anyone got solution for the issue&amp;nbsp; ""The caller was not authenticated by the service "" ?</description>
      <pubDate>Tue, 02 Apr 2019 12:57:00 GMT</pubDate>
      <guid>https://community.blueprism.com/t5/Product-Forum/The-caller-was-not-authenticated-by-the-service-Connect-to-BP/m-p/85420#M36417</guid>
      <dc:creator>SandeepKutwal</dc:creator>
      <dc:date>2019-04-02T12:57:00Z</dc:date>
    </item>
    <item>
      <title>Hi, Anthony,
how are you…</title>
      <link>https://community.blueprism.com/t5/Product-Forum/The-caller-was-not-authenticated-by-the-service-Connect-to-BP/m-p/85421#M36418</link>
      <description>Hi, Anthony,
how are you doing :)? Do you have runtimes and BP Application Server in the same domain? Or at least in Trusted domains (both ways) - not sure if it matters if&amp;nbsp;you can connect with insecure option. Did you try our trick with BP Application Server - creating another connection which will use the Windows Service and sign in through the Windows Service option?
Original query - k.vogiatzakis - this is really strange, my only recommendation at this moment would be to upgrade/downgrade to another version as I know that 6.3.0 is not the best release.
Zdenek</description>
      <pubDate>Tue, 02 Apr 2019 19:44:00 GMT</pubDate>
      <guid>https://community.blueprism.com/t5/Product-Forum/The-caller-was-not-authenticated-by-the-service-Connect-to-BP/m-p/85421#M36418</guid>
      <dc:creator>zdenek.kabatek</dc:creator>
      <dc:date>2019-04-02T19:44:00Z</dc:date>
    </item>
    <item>
      <title>Re: The caller was not authenticated by the service - Connect to BP Server</title>
      <link>https://community.blueprism.com/t5/Product-Forum/The-caller-was-not-authenticated-by-the-service-Connect-to-BP/m-p/124050#M54235</link>
      <description>&lt;P&gt;The default server connection mode &lt;STRONG&gt;(WCF: SOAP with Message Encryption &amp;amp; Windows Authentication)&lt;/STRONG&gt; authenticates using&amp;nbsp;&lt;STRONG&gt;Windows / Active Directory.&lt;/STRONG&gt;&lt;/P&gt;&lt;P&gt;If the remote machine and the server are in different domains or do not share an Active Directory that may be the cause.&lt;/P&gt;&lt;P&gt;&lt;STRONG&gt;WCF: Insecure&lt;/STRONG&gt;&amp;nbsp;connection mode does not validate server identity using active directory -- so it will work with this option.&lt;/P&gt;&lt;P&gt;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Tejaskumar_Darji_0-1765958802695.png" style="width: 400px;"&gt;&lt;img src="https://community.blueprism.com/t5/image/serverpage/image-id/41832i51940A9BA8FD4D50/image-size/medium/is-moderation-mode/true?v=v2&amp;amp;px=400" role="button" title="Tejaskumar_Darji_0-1765958802695.png" alt="Tejaskumar_Darji_0-1765958802695.png" /&gt;&lt;/span&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Make sure to select the same Connection Mode in app server and the remote machine (RR/IC) to make it work.&lt;/P&gt;&lt;P&gt;Note: Consider any security risks with the IT team.&lt;/P&gt;</description>
      <pubDate>Wed, 17 Dec 2025 08:10:19 GMT</pubDate>
      <guid>https://community.blueprism.com/t5/Product-Forum/The-caller-was-not-authenticated-by-the-service-Connect-to-BP/m-p/124050#M54235</guid>
      <dc:creator>Tejaskumar_Darji</dc:creator>
      <dc:date>2025-12-17T08:10:19Z</dc:date>
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