Windows 10 1709 - wsappx process high cpu load & and black screen after login for some users

Please double check the username.  I remember the same error but was upon retrying it worked out fine.

I'm pretty sure I have the username correct. When I run the same command on the local account, it works fine. Is there maybe a special syntax I'm missing for domain usernames? should I prefix with the domain or use name@domain.whatever?

To me, it appears to be an issue with the software Dell pre-loads. Here is why I believe this:

1. I tried all of the suggested solutions in this thread. They would only work if you did not add another use account after you "fixed" the problem.
2. I used the built-in recovery drive to wipe and reinstall Windows 10 Pro on three machines. This recovery loads all of the software Dell originally supplied with the systems, including the "My Office" application. The issue persisted.
3. I used the recovery image supplied from Dell's support website to reimage the machines. It also loads all of the original software pre-loaded on the system. The issue persisted.
4. I downloaded an ISO from Microsoft and used it to reimage these machines. This ISO does not include Dell's software or drivers. I had to manually reinstall the software and drivers I wanted on the systems. The "My Office" application was not installed; instead, the older "Get Office" application was installed. I was able to install Office and remove the "Get Office" application. I could also add user accounts after my initial software configuration without issue.

I do not know if the "My Office" application is the future of Microsoft's push to get everyone of O365. If it is, then this needs to be fixed as of yesterday.

I have been chasing down issues discussed in this forum for the last month and a half. Looks like this post started just after I had given up on figuring out the problem.

Went back and forth with Dell after 4 brand new 5480 with great specs (i7, 16GB RAM, 256GB SSD), and 1 Desktop (i7, 16GB RAM, 1TB HDD) were exhibiting the symptoms of having a black screen with a cursor after logon and only access to task manager. The laptops also had inconsistent issues with the trackpad not registering any clicks. I had rebuilt the desktop and one of the laptops several times and finally got Dell to swap them all out as lemons. Some how, 3 of the new laptops worked fine, but one still had issues. I suspect the replacement laptop with issues may have had a different image on it from Dell as the original replacement was damaged in shipment, and this replacement was shipped separately. Thankfully, today I stumbled across this post. 

I am not sure if the "My Office" apps are installed by Microsoft as part of "continual improvements" in Windows 10 v1709, or if Dell (and other OEMs) decide to include it in their image, but in my option the issue is squarely on Microsoft as it is and incompatibility within their own software that causes the issue with duplicate Office app icons, and the ensuing high CPU usage and inability to use Windows 10 apps while the CPU grinds away (sometimes only 30-40%, other times up to 100%). Seems simple enough that Windows 10, or the Office365 installers, should be able to remedy the duplicate icons and take action to prevent the issue in the first place.

Just venting my frustration a little as I have received a fair amount of questions that I did not have answers to and also a lot of frustration expressed by my management and the clients that these PCs were destined for. With 15+ years of professional experience, and now a senior systems administrator, I am embarrassed to have to say that these seemingly simple PC replacements have drug on for a month an a half with nothing from Dell or Microsoft except recommendations to rebuild the profile, reinstall windows, or swap out hardware...

Same problem here with a brand new (and crappy, don't buy it) Dell XPS 13 9370

• Computer Configuration > Administrative Templates > System > Logon > Show first sign-in animation = Disabled
• Computer Configuration > Administrative Templates > Windows Components > Search > Allow Cortana = Disabled
• Computer Configuration > Administrative Templates > Windows Components > Cloud Content > Turn off Microsoft consumer experience = Enabled

I'm following up my previous post with an update. I found after additional testing that the Group Policy settings I posted don't do anything. However, the following has worked consistently on 3 different computers, with domain or local user accounts. No telling if this will work for anyone else, but I hope it may help someone out there.

1. Do a Windows 10 Upgrade Install using the Media Creation Tool (https://www.microsoft.com/en-us/software-download/windows10, click Download tool now). You can either run it online, or create a USB drive. After the initial download and USB drive creation, I find that it is faster to run off the drive than online. Before the install begins, it will ask if you want to keep your programs and data, answer Yes (default). You won’t have to reinstall anything afterwards, which is nice because all of my computers are prepped.
2. After that is done, login as a local admin. I use the account that was created during OOBE, let's call it Administrator.
3. Open C:\Users. Rename the ‘Default’ folder to ‘Default.bak’ (you would need to show hidden files to see this folder).
4. Make a copy of a working profile folder in C:\Users and rename it ‘Default’ (I use the 'Administrator' folder). Choose Skip for all files that can’t be copied. Rename the copy as 'Default'.
5. Open the 'Default.bak' folder. Copy 'ntuser.dat' into the new 'Default' folder.
6. Delete the bad user profile.
7. Open a program by pressing Shift + Right-click and choose ‘Run as a different user’. Use the credentials of the user you’re trying to fix. This will create the user’s new profile folder.
8. Restart, then login with a user you’re trying to fix. It should hopefully work. If not, repeat 6-8 and it should work on the retry.

I’ve tried it with and without an upgrade install, and it simply won’t work without it. I think the reinstall fixes some corrupted Store Apps. I should warn that I have not built out one of these 'repaired' user profiles to ensure that there are no hidden issues. For now this is good enough for me and I have 10 of these new computers to deploy in a few days, so I'm pressing on. Good luck.