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ArcObject 10.5.1 assembly failed to register in ArcMap 10.6

Question asked by MWHUK_STerkar on Mar 9, 2018
Latest reply on Mar 12, 2018 by gkmieliauskas_cellexp

My user is trying to register custom  toolbar assembly developed in 10.5.1 on ArcMap 10.6 using ESRIRegASM but uable to do so, as it is giving error message, "Registration failed. Could not load the file or assembly myfilename.dll or one of its dependencies. Operation is not supported. (Excpetion from HRESULT: 0X80131515)"

 

My assumption is that it is possible to register lower version assembly in higher version of ArcMap. 

 

Can anybody help with this or any solution.

 

Regards

 

Sunil Terkar

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