403 forbidden error - Reporter Builder 3.0

Hi AndyGadget,

Based on my research, there are many factors can cause this issue. For more details, we can refer to the following possible causes:

1. Some configuration did not configure well. Open the Reporting Services Configuration Manager to check all the configuration, see http://ift.tt/1ibzlrP on Reporting Services Tools.


2. In the reporting services configuration manager tool, rebuild the virtual directory of report manager/report server.


3. If the report server enables SSL, recreate a certificate and then rebind it to report server.

Besides, the issue can also be caused by the web.config for the SharePoint site was not correctly modified by the Reporting Services Add-in for SharePoint. For more details, please see the following thread:

http://ift.tt/1cM2w4A

Hope this helps.

Thanks,

Katherine Xiong

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Katherine Xiong

TechNet Community Support