Windows 10 upgrade error c1900101-20017

tl;dr 1 – C1900101-20017 means that the Windows 10 setup encountered an error on the initially reboot and likewise indicates you’re screwed but read below for some hope.

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tl;dr 2 – I got to out to Microsoft Support for assist via this error and I provide their first level assistance a B and also second level assistance a huge fat F. Either means they didn’t assist.

You’re analysis post this bereason you tried to upgrade your device to Windows 10 after a while it booted ago to your old version of Windows and greeted you via the cryptic error code C1900101-20017:


Or possibly you were luckier and also obtained this ever-so-descriptive 0xC1900101 – 0x20017 variation of the error:


Explacountry of the Problem

The error presented to us is “The installation failed in the SAFE_OS phase via an error in the time of BOOT operation” and also what it suggests in plain English is that the Windows 10 installer remained in the middle of installing Windows 10, and it necessary to reboot. But somepoint wrong happened throughout the boot (for example, a driver crash bring about a Blue Display of Death). Since the boot was unsuccessful, the Windows 10 installer terminated and also changed your computer system ago to the variation of Windows you had prior to.

The great news: At no allude is your computer bricked. I’m thankful for Microsoft for ensuring that, also though I’m annoyed with their other decisions (view below) at the exact same time.

Why Does this Problem Happen?

Microsoft assistance would certainly have actually you think that this is because you have actually some faulty hardware. I strongly disagree. 99%+ of the moment it’s a straightforward issue of a software bug. Usually, the driver that ships through Windows 10 has actually an insect in it, or the driver that you have actually mounted presently on your mechanism has actually some compatibility trouble through Windows 10.

A hardware trouble is a opportunity (slim, however possible). For example, you might have a negative memory chip and Windows 10 just happens to put some critical item of code at that faulty memory location triggering the difficulty.

Anvarious other reason to think that this is commonly a software program – not a hardware – problem, is Microsoft Support’s insistence that I reformat/reinstall my computer. “In their experience” it nearly always fixes the problem. Well guys, if reinstalling solves the difficulty, then it’s not hardware.

So How carry out I fix it?

The significant problem is that Microsoft provides us no tools to number out what specifically went wrong. Ideally tbelow would certainly be some kind of log file listing which driver was the last to initialize so we can guess what’s leading to the difficulty, yet there isn’t. At least, I couldn’t uncover such a point at the typical setup log location ($home windows.~btSourcesPanther).

That leaves you with the dubious pleasure of narrowing dvery own the culprit making use of trial and also error.

Step 1: Remove/Disable devices

** Before you begin ** you need to develop a Resave Point so you deserve to unexecute any kind of damages you might carry out alengthy the method. If you don’t recognize just how to develop a Restore Point then this overview isn’t for you.

The Microsoft support short article which mentions this error computer system recommends unplugging all your USB gadgets. I would take it a step better and also unplug every little thing that you can, even internally. For instance, if you have actually both an installed and also a specialized video, rerelocate the dedicated card and also use the video card on your motherboard. At leastern till you have the right to rule out your video card.

You need to additionally open up the tool manager and also go via the list. See a driver for a long-earlier junked printer? Delete it. Clean up anypoint that appears out of place. (Usual disclaimer: Deleting vehicle drivers deserve to cause your computer not to function/boot. See alert around around producing a gain back point).

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Tip 2: Upday Drivers

Make certain you’ve gained the latest chauffeurs for all your gadgets by downloading updated packeras from the manufacturer websites. Don’t forobtain motorists for built-in peripherals on your motherboard. You have to probably upgrade your BIOS to the latest.

Also Try: Install Windows 10 On Another HDD

Try reinstalling Win10 after doing Step 1 + Step 2. But if that doesn’t assist, attempt this.

Remove the hard drives from your computer system and also plug in an old/brand-new HDD you have laying roughly (you do have one laying about, don’t you?). Install Windows 10 on this tough drive using a Windows 10 DVD.

If the installation falls short, hopetotally you’ll obtain a far better error prior to. This is bereason tbelow is no “old windows” for the installer to boot earlier too. It will hopetotally crash telling you what the culprit is.

In my instance this installation flourished which led me to inevitably finding out the original culprit: The Intel RAID on my ASUS Sabertooth X58 sindicate doesn’t occupational at through Windows 10. I have actually found many kind of complaints on the web, however no solution. My solution was to readjust the controller from RAID to AHCI mode and also put up my RAID making use of Windows Storage Spaces.

Common Sources of The Problem

In relooking this error, I discovered that many people we enduring from assorted instances of the difficulties detailed listed below. You may autumn under among these categories:

Broadcom WiFi vehicle drivers are recognized to reason difficulties throughout the upgrade. This may no longer be an worry given that Windows 1511 was released, yet if you have actually Broadcom WiFi in your device, try Googling for remedies specific to Broadcom.

If you had a different cause, please upday me in the comments below and also I’ll add to this list.

Regarding Microsoft Support

In my desperation I contacted Microsoft Support. I assumed tbelow was some magic log file they can look at to settle the trouble. I was considerably disappointed.

I began out making use of their chat company. The first agent took over my computer system and also tried to do a couple of standard points which didn’t occupational out. The following day I talked to one more agent over the phone which tried a totality bunch of various other points that likewise didn’t occupational. We continued on and also off for 4 days and still nopoint worked. Ultimately I was asked, and was moved to second level support.

I’d prefer to cite that I was impressed by the initially levels support’s commitment. Although it was noticeable they were running oof a manuscript and also didn’t really know hot to assist me particularly, they were tenacious. They dubbed me 3 times a day to see if my worry was refixed and also to watch if I wanted to save diagnosing. They remained via me on the phone for hours while the Windows 10 was installing over and over and were genuinely trying to provide dedicated company. All this for a product I’m not paying a cent for. Contrast that with Google (AdWords) support wbelow I had actually to speak to in 8 times over 2 weeks to have a trivial matter resolved.

So why do I provide them simply a B? Mostly because it was noticeable that most of their actions were a waste of time (e.g. clear out my temp folder and try to reinstall) as well as the reality that they did stupid things choose leave my computer system running without a firewall (not a problem for me yet non-techies beware). The truth that I had actually to take control of my computer system back from them a few times when it was noticeable I could finish their jobs faster and also better didn’t aid either.

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2nd level assistance, on the other hand, gets a big fat F. The agent was arrogant and also all he wanted to perform was reformat my computer. I had to argue with him that I already knew that it would certainly job-related (as I had installed Win10 on a various HDD) and also I was interested in finding the hardware/driver that was leading to the incompatibility rather of wiping my device. Ultimately he agreed to look right into it and put me on host. After a long wait on host, the call was disconnected, and he never dubbed back. I offered up on them at that suggest.