Hello - I'm trying to install dotnet 4 on the server but I'm failing badly. Thinking it's probably an update issue, I've now tried to install SP1 too and that fails (RPC_S_CALL_FAILED(0x800706be)) If I try to run the system readiness tool as recommended - that fails too! AV has been disabled (Sophos). I've done countless reboots and also tried many of the updates manually too (most fail) It's a Dell PE2950 16G, Win2008 R2 Enterprise x64 Has anyone any ideas please? Thanks all

Hello, as I see you have RPC failures. Check if there is a firewall blocking these download. Also, disable all security softwares and check again. Another option is to download it and install it manually. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified IT Professional: Enterprise Administrator Microsoft Certified IT Professional: Server Administrator

Thanks for your help - I'm already trying to install with the offline versions of SP1, Dot Net etc... I do go through a proxy (which I cannot configure) but all other servers within the company update as expected - It's just this one server that won't. Sophos is the only security app installed - I've disabled all services and prevented that running. Still no joy Many thanks

any update for your issue?Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Yes, I am trying to install the 64bit updates and .net on my 64Bit server. Still no success and frustratingly slow support from MS on this. Many thanks

hi michael, hope you are installing the x64 .net instead of x86 Thanks VirajPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

No - Sadly this is still broken and causing a massive headache for me. I've now logged a call with MS technical support and will see where we go from here.