Hello,

A sys admin ran the Exchange 2010 BPA on a 2013 CAS server and got a warning about .NET 2.0 not being registered on exchange 2013. He then ran the following command:

aspnet_regiis.exe -s W3SVC/1/ROOT/owa

aspnet_regiis.exe -s W3SVC/1/ROOT/ecp

aspnet_regiis.exe -s W3SVC/1/ROOT/autodiscover

aspnet_regiis.exe -s W3SVC/1/ROOT/Microsoft-ActiveSync-Server

This broke email. He then ran aspnet_regiis.exe -i -enable

and we now receive this error:

C:\Windows\Microsoft.NET\Framework64\v2.0.50727>aspnet_regiis.exe -i
Start installing ASP.NET (2.0.50727).
.........
An error has occurred: 0x80004005 Unspecified error

C:\Windows\Microsoft.NET\Framework64\v2.0.50727>

Before this everything was working great. Can someone please advise how to get running again. When going to OWA we get:

Hi,

Please see this similar thread:

http://social.msdn.microsoft.com/Forums/exchange/en-US/a18f3bfd-4c5b-427f-a31a-417c55fe3a81/getting-erro-an-error-has-occurred-0x80004005-unspecified-error-while-registering-net-20?forum=netfxsetup

 

Thanks

• Marked as answer by Mavis_HuangMicrosoft contingent staff, Moderator Thursday, August 07, 2014 4:53 AM

C:\Windows\Microsoft.NET\Framework64\v2.0.50727>aspnet_regiis.exe -i

Start installing ASP.NET (2.0.50727).
.........
An error has occurred: 0x80004005 Unspecified error

C:\Windows\Microsoft.NET\Framework64\v2.0.50727>

This seems to be when you run CMD without admin rights.

Be sure to run it "As Administrator"