Trouble with AutoCad 2015 Service Pack 2

[Anonymous]

When I try to install Service Pack 2, I get a Net Framework error:

This is a bit odd because I have 4.7 installed which is newer.

Any ideas how to get past this?

thanks

[dmfrazier · Accepted solution]

With some older version AutoCADs it is actually necessary to "roll back" your .Net version to the one it expects. (IOW, uninstall the newer version and re-install the older.) I know this was the case when installing the 2015/16 product on some machines here. It seems ridiculous to have to do this, but it does work. You can use Windows Update to re-update .Net after the install. 

[cadffm]

I had a idea, I googled or searched in AKN for:
autocad 2015 framework 4.7

Only one example hit:
https://forums.autodesk.com/t5/autocad-forum/john-vellek-status-of-net-4-7-breaking-acad-2015/td-p/7...

But you will find more and your solution too.

[Anonymous]

thanks

I will have to roll back to 4.5 as suggested in previous reply