Error in RealSense Viewer

• MartyG

  • December 02, 2021 09:53

  Hi Eriko Mogi  There have been a couple of past cases of this error, such as the one in the link below.

  https://github.com/IntelRealSense/librealsense/issues/1930

  If you are using Windows, please check in the Windows camera privacy settings that access to the camera hardware and permission for applications to access the camera are both set to On.  Instructions for doing so are here:

  https://github.com/IntelRealSense/librealsense/issues/3381#issuecomment-503424789

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• Eriko Mogi

  • December 02, 2021 12:36

  Thank you for your reply.

  I see the information.'Privacy Settings' option of camera was already On.

  librealsense's version is v.2.39.0. Should I upgrade realsense2.dll' version ?What is the difference between versions? 

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• MartyG

  • December 02, 2021 12:44

  2.39.0 dates back to October 2020.  The SDK is now at 2.50.0 at the time of writing this and there have been a huge number of updates and bug fixes made to the SDK since 2.39.  So if you are able to upgrade your SDK version then I would strongly recommend trying that to see whether it resolves your problem.

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• Eriko Mogi

  • December 03, 2021 10:06

  I tried to apply realsense2.dll at 2.50.0. but an error has occurred.

  

  Backend in rs2_create_device(info_list:0A7EDB10, index:0):
  MFCreateDeviceSource(_device_attrs, &_source) returned: HResult 0x80040154: "クラスが登録されていません"

   

   

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• Eriko Mogi

  • December 03, 2021 10:26

  An error was detected in the following.

  1. Update the firmware of realsense, from v5.9.13.0 to v5.12.13.50.

  2.Upgrade OS version of PC connecting Realsense, windows10 1903 to 20H2.

  3.An error has occurred on Realsense Viewer.

  4.Update realsense2.dll v2.50.0. 

  Should I update dll file at first?

   

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• MartyG

  • December 03, 2021 10:35
  • Edited

  It was a good idea to update your firmware from 5.9.13 to the recent version 5.12.13.50 first before using 2.50.0.  

   

  Can I confirm whether you are updating the entire RealSense SDK by downloading and running the Windows installer file in the 'Assets' file list on the SDK releases page and not just changing the realsense2.dll file?

  https://github.com/IntelRealSense/librealsense/releases/tag/v2.50.0

   

  

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• Eriko Mogi

  • December 03, 2021 11:48

  Should I install the entire RealSense SDK to recognize Realsense on the Realsense Viewer ?

  I did not install SDK, install only realsense2.dll to operate an application developed.

   

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• MartyG

  • December 03, 2021 13:59
  • Edited

  There are RealSense applications where you can simply substitute in an updated version of the RealSense DLL.  For the RealSense Viewer though, to use an updated version you should either update the entire SDK or instead download and run the small standalone pre-built version of the Viewer called Intel.RealSense.Viewer.exe from the 'Assets' file list of a particular SDK version on the 'Releases' page (see the image above).

   

  Intel.RealSense.Viewer.exe should be run with a double-leftclick from the folder location that it was downloaded to and not with the Viewer launch shortcut icon on the Windows desktop.

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