Guys, I hope that someone can help, I am way outside my comfort zone. Thanks, Brian From: Brian Skingley [mailto:[log in to unmask]] Sent: 06 July 2012 20:38 To: PCSOFT - Personal Computer software discussion list Subject: Re: Net Framework and Microsoft.NET Framework I am currently running two PCs and have been struggling to get Microsoft Maths 4.0 onto the main PC - a Desktop. Both machines have Win 7 as their OS. As I download the software from Microsoft, CNET or whomsoever FINE As I Run the software to Install it - FINE BUT then an error message appears - "we told you that you would need >NET Framework 3.5 +SP1" I do not use this software often so first time here I tried to 'upgrade' to vs 3.5 not realising that I already had vs 4 under the hood as it were. The Install just never happened. I tried this several times, using different sources of code. I have tried to undo anything thatI might have done and restarted several times! No luck. This must be a trivial problem and I am doing something wrong. YES must be! IO am now beyond any comfort zone that I had. Using Windows Update I have checked the current and past status of . NET Framework This looks there is the original 4 install followed by two to three updates, can check and give you chapter & verse, followed by 9 or 10 Security upgrades - all must be after the 3.5 which would have been there. Any other information can be provided as required. My next action is to ! check the >NET framework status of the Laptop and then try and install to that. Another clue me thinks. I would be grateful for any other useful suggested actions . It does not help but I know a number of folk who run Microsoft Maths but all on older OS systems. Not sure whether they have, or need ,NET Framework! Any suggestions gratefully received, I am off to the Laptp now! Thanks Brian ==================================== brian skingley email: [log in to unmask] The NOSPIN Group is now offering Free PC Tech support at our website: http://freepctech.com