Is any work around?

Once awhile back a few builds I was getting error also. I deleted everything in folder and folder and started over with instructions. Not knowing what I did different but did have a good outcome? Good luck to you my friend

You may have a bad ESD file.
If you can, get Windows Update to download again, (all the files all over again), and grab the ESD file, copying it to the desktop as soon as the "download is at 100%" but before it starts to install.

I know that one time, I copied my ESD file as soon as it showed in the folder, then copied it again as soon as the first one was finished copying, and I found that there was a 1byte difference between the two files. One worked with the ESD to ISO tool, and the other failed.

ESD to ISO - YouTube

This is a temporary video created by our member Kari. It will help you to see how to grab the ESD file at the right time. Watch how he keeps refreshing the file folder, as he waits for the ESD file to appear.

Could it because of not enough free space on the disk ? I made those conversions usually next day or later, well after it was installed.

yufuru said:

Thank you for your attention and help.

I do not know reason why but Windows update is not showing Build 10525 any more. Therfore, I can not down load it again. Realy I do not know why disappered from my Windows update.

Also, Dynamic Update for Windows 10 Insider Preview for x64-based Systems (KB3062501) is failed to install and never show it up in Windows update to re-install it.

I am confusing now realy what is problem.

Are you on the fast ring or the slow ring for insider builds? You could try toggling from fast to slow, reboot, toggle to fast again, and see if that makes it come through. Still, I think your ESD file is bad (it happens sometimes). I would be patient and wait. There was not much in 10525 in the way of features, and the way memory is handled, so it's not a big deal if you don't have it for a little while.

I myself switched to slow ring, and it has not come through for me yet. I will be patient. I know I will eventually get everything, so as long as Windows Defender keeps updating, I am okay.

p.s. changing from one "ring" to the other could have a delay of 24 hours before you see anything.

CountMike said:

I think it was #2.

Should have been 1., Mike.

Wynona said:

Should have been 1., Mike.

I saw that LZX-Compressed.... so assumed it was because of #2, never really payed any attention to that process, it just worked for me every time.

yufuru said:

I am a having problen that can not complete (Install) "th2_release Professional 10525" with 0x80240031 error.

I have tried so may time to install but never success and error message is always 0x80240031.

I am "Windows Insider Program" member and updated from Windows 8.1 professional to WIndows 10 professional.

Would appriceated very much if any one can give me any suggestion for this problem. BR, Yukio

PS;

I do have files and holders in $Windows.~BT holder when download but still never completed to install build 10525. May be still missing file (s) or holder (s)>

Are you trying to update a Retail install (an upgraded OS) or an Insider install?

I don't think you can lay 525 on top of a Retail install (an upgraded OS).

You probably need to dual boot or run a VM for the insider build.