I met same problem, reported "Error 1935. An error occurred during the installation of assembly component {1E507087-0819-45E0-A01F-C8B3B9A1E18E}. HRESULT: 0x800736FD". Who can help to solve it?

These types of errors are related to the Microsoft installer.  There are a significant number of postings on the Microsoft knowledge base webpage, many suggesting the .net framework may need to be reinstalled.  However, if you are running any virus scanning or antispyware software, turn it off temporarily and try the install. 

I struggled with this problem on two machines for over a week.  Mminari is right, it wasn't just ENVI that I had trouble installing, but several other .msi installers gave me similar errors.  For me it wasn't related to antivirus software (I didn't have one running on one of the machines), and reinstalling .net wouldn't work (the installer would fail, just like the other installers).  I found a thread here that somehow lead to my solution: http://forums.esri.com/Th...1148&t=287391#902480 I did the following two things and one of them solved my problem (I'm not sure which one). 1.  Ran the system file checker (open up cmd window with admin privileges and typed:  sfc/scannow).  It found some corrupt files and repaired them. 2.  Edited the registry key discussed in that ESRI forum post.  (Changed the "registry size limit" key at HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control to "ffffffff" which results in the data column saying "0xffffffff (4294967295)".   So...jmzhang maybe try those suggestions and let us know if either one worked for you. 

I did the second thing that above-mentioned and solved the problem.

I did use the second step and after the restart it was working with ZERO problem. thanks to mikeboruta

Thank you mikeboruta. I solved the problem by following your second step. It was useful.

Jianming Zhang wrote: I met same problem, reported "Error 1935. An error occurred during the installation of assembly component {1E507087-0819-45E0-A01F-C8B3B9A1E18E}. HRESULT: 0x800736FD". Who can help to solve it?

I think you might be missing the microsoft c++ redistributable package (or .NET framework service pack) as discussed here and many other threads if you search for Error 1935: https://answers.microsoft.com/en-us/w... https://support.microsoft.com/en-us/h...