Resolving ASP.NET 5 DNVM Upgrade Issue And Changing DNX Version

In this article I am going to explain about DNVM upgrade, uninstall DNVM, re-install DNVM, resolving the DNVM multiple version upgrade issue with user name having space.

ASP.NET 5 is not yet released officially and the latest version of ASP.NET 5 is RC1. To create, build, run & host ASP.NET 5 application we need DNVM, DNX and DNU.

Issue with DNVM Upgrade

While running “dnvm upgrade” command it was saying that “Access to the path ~\.dnx\runtime\temp\” is denied.

I tried a lot to change the property of ‘~\.dnx\runtime\temp\’ folder but I was not able to do that because while it downloads latest version of dnx it was storing it in same folder and when download completed within 1-2 seconds it was displaying the message “Access to the path ~\.dnx\runtime\temp\”. In short of of time I cannot change the property of that folder.

The 2^nd issue which is coming is ‘C:\Users\DeLL ’ is not recognized as an internal or external command, operable program or batch file. The system cannot find the path specified.

While searching for this issue I found a lot of threads in which it was mentioned that this issue is occurring because of space in username and it is a known bug which has not been resolved yet. I tried a lot but issue not resolved.

I was running any command of DNVM it was displaying the same error message. In the following screenshot I ran command “dnvm list” and get the same exception,

‘C:\Users\DeLL ’ is not recognized as an internal or external command, operable program or batch file. The system cannot find the path specified.

Resolving DNVM upgrade Issue

I am using old version of dnx runtime which is not being upgraded to latest version. To resolve this issue I have done the following things,

Remove all the DNX folders.

Run the following command,

Now run,

Once this step is complete you should be able to run dnvm and see some help text.