https://devzone.nordicsemi.com/f/nordic-q-a/73410/sdk-17-0-2Hi, we are updating to the latest SDK 17.0.2. We have a build error in ../components/Libraries/crypto/nrf_crypto_rng_backend.h which references a header #include &quot;optiga_backend_rng.h&quot; This header does not seem to appear in the Nordic-SDK tree. en-USTelligent Community 13Wed, 31 Mar 2021 07:45:18 GMThttps://devzone.nordicsemi.com/thread/302676?ContentTypeID=1Wed, 31 Mar 2021 07:45:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:507101fe-5778-4b21-82e8-b39e884dad14Karl Ylvisaker<p>Great, I hope you find it! :)<br />If it is there, but there is a build error for this file, please check that its path is added to the linker&#39;s User Included Directories in the project&#39;s options.<br /><br />Best regards,<br />Karl</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/302630?ContentTypeID=1Tue, 30 Mar 2021 15:01:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b9c742b9-b434-4315-bafd-68d755456e58DaveC<p>Thanks, will check</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/302624?ContentTypeID=1Tue, 30 Mar 2021 14:44:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6786ce1f-dcd2-45c2-ad91-bb61892094ebKarl Ylvisaker<p>Hello,</p> [quote user=""]This header does not seem to appear in the Nordic-SDK tree.[/quote] <p>Please check the path : nRF5_SDK_17.0.2_d674dde\components\libraries\crypto\backend\optiga<br />This should be where the file is located. If the file is not there it must have been deleted - if so, please restore it or redownload the SDK.<br /><br />Best regards,<br />Karl</p><div style="clear:both;"></div>