07-30-2019 10:07 AM
Welcome to the forum.
I am not a HP employee.
This seems to be a new problem when updating to W10 version 1903.
One fix that seems to have worked for some folks is to navigate to:
"C:\Windows\System32\drivers", then find the iaStorA.sys driver and rename it to iaStorA_old.sys.
Try the update again.
07-30-2019 11:10 AM - edited 07-30-2019 12:18 PM
Thank you for your suggestion. Having tried it, it seems that the installer from Intel will not replace the missing file, whereas the HP support assistant replaces it with a file that's even older than before!
07-30-2019 02:09 PM
I am afraid that removing the Intel driver will cause side effects like slower disks, it will have a purpose.
And using a wrong version of the Intel driver will cause unstable results as the Windows Upgrade suggests.
So in my opinion, we need an update of the Intel driver, and Intel recommands not using their own driver but the one of the hardware vendor, in our case HP. So I hope that HP will come with a solution soon!
07-31-2019 04:27 AM
I think I may have a clue: I downloaded the RSTetup.exe for version 126.96.36.1994 (recommended by Microsoft) and installed it. I still get the message that iastora.sys does not work.
The Intel app shows version 188.8.131.524, as does the device manager, under IDE ATA/ATAPI controllers. BUT THE FILE NAME OF THE DRIVER HAS CHANGED. Under "driver details", the file name is now iastorAC.sys
Is this a "catch 22" situation, where Windows Update needs the old file name, but the new file version?
What to do?
This is my first time on HP Forum. Does the HP tech team monitor the forum and provide useful solutions? Do they pass information over to Microsoft?
07-31-2019 04:33 PM
The Windows update workaround suggested in a prior post in this thread seems to work on some HP Desktop PCs (Link).
Don't shoot the messenger if you have not tried this fix.
You will have to wait for a Microsft fix if you dont navigate to "C:\Windows\System32\drivers", then find the iaStorA.sys driver and rename it to iaStorA_old.sys
07-31-2019 07:13 PM - edited 07-31-2019 07:15 PM
This is a Microsoft problem.
Neither HP nor Intel can fix this.
The Intel driver is causing the 1903 update to halt.
Disabling the Intel driver allows the 1903 update to proceed.