> How to > Computer Instruction > [Fixed] Windows 10 19H1 (1903) 18356.21 Update Stuck/Repeatedly Fail to Install

[Fixed] Windows 10 19H1 (1903) 18356.21 Update Stuck/Repeatedly Fail to Install

Updated on Apr 04, 2019 by Tracy King to Computer Instruction

This article offers you effective methods to help you fix the error 'Windows 10 19H1 18356.21 update stuck or repeatedly fail to install'. If you are facing Windows 10 18536.21 update with an error code, follow to find solutions to fix such errors and get health Windows 10 new update install in your PC now.

Windows 10 19H1 18362 is recently available for Windows 10 users to free update and enjoy new features now. However, some users complain that they cannot install Windows 10 19H1 18362 updates. And some Windows users even reply that their computers got stuck in installing process with Windows 10 18362 with a blue screen or those who are currently on Windows 10 18356.16 can't get this update. So how to fix these problems?

Don't bother anymore. Here in this article, we'll provide you effective methods to help you effortlessly fix Windows 10 1903 with update stuck or repeatedly fail to install with error code issue. 

Method 1: Free download Windows 10 19H1 and fix update failure error
Method 2: Troubleshoot Windows 10 1903 update stuck error
Method 3: Reset Windows Components to fix Windows 10 19H1 18356.21 repeatedly fail to install issue
In order to avoid unexpected system failure or Windows update data loss issue, it's highly recommended for you to back up the current Windows system and important personal files in advance. 
Professional Windows backup software - EaseUS Todo Backup supports to simply create system and data backup images within for free in 30 days.
It is fully compatible with all Windows systems including the latest  Windows 10 OS builds. You may directly apply this software to help you create a system image and backup data with ease now.

Method 1: Download Windows 10 19H1 (1903) 18356.21

Logically, when Windows 10 19H1 18356.21 is released by Microsoft, Windows users can get Windows update in their PCs.

If you are not an insider user and cannot get access to the new Windows 10 18356.21 update in your PC, don't worry. Here you can directly click the below links to free download Windows 10 19H1 18356.21 and fix update failure error with error code then:

Download Windows 10 19H1 18356.21 from Microsoft as an insider preview user

Fortunately, if you've updated your computer into Windows 10 19356.16, you can also get the new update automatically from the slow ring path. 

Now you may apply the downloaded Windows update images to perform a clean install on your PC without any problems. The errors such as blue screen, black screen or "unable to complete the update" errors will be fixed by the install of the latest Windows 10 with downloaded ISO image files. If you cannot download it yet, do remember to join in the insider program or you can follow the tips here to force Windows download and install the latest Windows update:

"Settings" > "Update & security" > "Windows Update", and clicking the "Check for updates button".

But, if you get stuck or your PC repeat to install new Windows 10 1903 update, don't worry. In the next two methods, you'll find wanted solutions to fix this issue.

Method 2: Troubleshoot Windows 10 19H1 18356.21 update stuck error

Here you can find two solutions to fix Windows 10 1703 update stuck error, you can check to figure out which solution suits you the most and follow the offered one to solve the problem in your PC then.

Fix 1: Extend system partition

Professional partition manager software - EaseUS Partition Master helps to extend system partition and fix system errors in your PC so to fix Windows 10 update stuck error with simple clicks. You can directly free download it and follow below detail guidance to fix Windows 10 fail to install or update failure problems now:

Download Now

 Windows 10 is supported

Extend system drive or system reserved partition


Step 1: Launch EaseUS Partition Master

Run partition manager software

Step 2: Free up space to extend partition

If the hard drive has enough unallocated space to extend the target partition, jump to Step 3 and continue.

If not, free up space first:
1. Right-click on the partition next to the target system partition and select "Resize/Move".
2. Drag the partition ends to free up space, leaving enough unallocated space behind the target partition, click "OK".

Free up space to extend partition

Step 3: Extend partition

1. Right-click on the target system partition and select "Resize/Move".

Resize target partition

2. Drag the target partition handle into the unallocated space to extend the system drive.

Add space to the target partition

Step 4: Keep all changes

Click the "Execute Operation" button and click "Apply" to keep all changes.

Keep all changes for extending partition

Check and fix system errors


Step 1: Open EaseUS Partition Master on your computer. Then locate the disk, right-click the partition you want to check, and choose "Check File System".

Check Partition - Step 1

Step 2: In the Check File System window, keep the "Try to fix errors if found" option selected and click "Start".

Check Partition - Step 2

Step 3: The software will begin checking your partition file system on your disk. When it has completed, click "Finish".

Check Partition - Step 3

Fix 2: Troubleshoot Windows 10 1903 18356.21 install error

Windows Update Troubleshooter will effectively help you fix Windows 10 Creator fail to install error. You may follow the below steps to fix this problem on your PC now:

Step 1: Press "Windows + X" and select "Control panel".

Step 2: Type: troubleshooter in the search box and click "Troubleshooting".

Step 3: Under System and Security, click "Fix problems with Windows Updates".

Step 4: Tick "Advanced" > Enable and check "Apply repairs automatically".

Step 5: Tap "Run as administrator" (you may have to enter your passcode first) > Then click "Next" to finish the process.

Method 3: Reset Windows Components

If you are facing Windows 10 19H1 18356.21repeatedly install or fail to install error in your PC, you may try to reset Windows Components to fix the issue by following below steps:

Step 1: Press "Windows + X" and choose "Command Prompt (Admin)".

Step 2: Stop "BITS, Cryptographic, MSI Installer" and the "Windows Update Services". 

Step 3: Then type the below commands at the Command Prompt and hit "Enter" after you type each command:

  • net stop wuauserv 
  • net stop cryptSvc
  • net stop bits
  • net stop msiserver

Step 4: Rename the "SoftwareDistribution" and "Cartoot2" folder. Then type the following command in the Command Prompt and press Enter after each type:

  • net start wuauserv
  • net start cryptSvc
  • net start bits 
  • net start msiserver

Step 5: Type Exit in the Command Prompt and restart PC.

Now that you can directly perform a clean install with Windows 10 1903 18356.21 images downloaded in Method 1 with ease now. No problems will ever happen or block you from enjoying new features of Windows 10 anymore.