Windows 10: KB3025380 required in 9879 to get new build

if you search through old EightForum posts during the Windows 8 betas, you saw a lot of people had problems because they ran CCleaner and it messed up their fonts and registry. A common problem was the dreaded "symbols" showing up in the start menu...

 

They probably didn't make good use of the long customisation list in Ccleaner? Font Cache: DNS Cache: Environmental Path..etc can all be eliminated from the cleaner.

 

I have KB3025380 installed on19 Dec but the update failed last night, I will try again later.

 

Second attempt failed after about 5 minutes with error code 0x8024200D

 

hello ,try doing a full iso download ,save it to the desktop ,right click on it and select mount and run setup as and upgrade
Download Windows 10 Technical Preview ISO - Microsoft Windows

 

Thanks, I'll try that assuming that my internet speed gets a bit better than the 4mbits/sec that it is at the moment.

 

That's what the problem is. You are probably having connection issues.
When doing this kind of online update, it doesn't matter what your speed is as long as you have a STABLE connection. So it's always better to have your computer hard wired to the router (ethernet connection) during the update process.
The online update is almost as big as the ISO file (over 3GB) so it's better just to get the ISO just in case you run into problems in the future. And remember, do wired connection to the internet.

 

I've just managed to download a 64bit iso. Last nights failure came during the installation phase, I forgot to make a note of the error code.

 

OK as part of the testing process I noticed there was a boot entry to roll back the "upgrade ?" I selected roll back to previous OS and had my Windows 7 Ultimate back in less than 5 mins. The only things wrong were the Media Center icon was no longer pinned to the taskbar and the Windows Explorer lost the customization to open @ My Computer. Pretty dam good I would say.

 

That's good to hear

 

I followed Caperjack's advice and everything went well upgrading, until a light blue screen told me that it had failed. Nothing was effective except rollback to the older build. On another pc, I am doing a fresh load using the iso dvd that I made. So far it is loading exactly the same as any other Windows.

 

looking to rollback on my laptop ,where did you find the boot entry ,was it in msconfig

 

The boot screen choice when dual booting is where you will find it

 

ok thanks

 

My rollback was the only option that worked from about four offered and I only tried it as a last resort. By the way, the clean load on the other pc has just failed shortly before completion, "Windows could not update registry data in the installation".