What is DISM tool?
DISM (Deployment Imaging Servicing Management), preinstalled on Windows 8.1/Windows 10, is commonly used to repair and prepare Windows images on Windows Recovery Environment, Windows Setup, Windows PE.
As a system management tool, it can resolve corrupted system files even when SFC SCANNOW not working. But sometimes you may also receive DISM error 87, saying the parameter is incorrect. Why does this problem occur? How to fix it? I will explore these questions in the following article.
Why do you receive DISM error in Windows 10?
DISM error 87: the parameter is incorrect could be the result of typing the wrong command when using DISM /CheckHealth or DISM /ScanHealth. Thus, the first thing to check is whether you entered the commands correctly.
If the command you use is confirmed to be correct, then you can consider following causes:
1. Windows 10 Update error. After DISM find a corrupted images or files, it will use Windows 10 Update to download the necessary files. If Windows Update failed, the process will be interrupted.
2. Attempting to copy a file over 48GB from one partition to another partition using DISM /AddPackage.
3. A required service does not start, e.g. you cannot connect to a network.
How to fix DISM error 87 the parameter is incorrect?
In this part, I’ll show you how to fix error 87 in Windows 10 with 5 effective methods:
Method 1: Use DISM command-line correctly
Users often forget to add a space before the slash and type the command like below.
To type the command correctly, you need to add a space before the slash. Just like the following command.
Method 2: Revert Windows Update and clear Component Store
Windows Update can be a cause for DISM error 87. To fix this issue, you can restore Windows Update to a previous good state and clean up the component store. It supports Windows Updates, installations and configurations.
Step 1. Type cmd in the search box and run as administrator.
Step 2. Type the following command to revert Windows Update and hit Enter. Then, restart your computer and save these changes.
Step 3. Type the command below and hit Enter. After that, restart your computer and make these changes available.
Now, the component store and potential corrupted files may be cleaned up. You can try to run DISM again on Windows 10.
Method 3: Run SFC /SCANNOW tool
SFC /SCANNOW can also fix the corrupted files. You can try it first and run DISM again.
Step 1. Run cmd as administrator.
Step 2. Type sfc /scannow in the command prompt window and hit Enter.
Step 3. Run DISM again.
Method 4: Run CHKDSK tool
Some users report the CHKDSK can solve DISM error 87 in Windows 10. Try it if you have on idea.
Step 1. Run cmd as administrator.
Step 2. Type chkdsk C:/r in the command prompt window and press Enter. Type Y if you are asked to run at the next time you start your computer.
Step 3. Run DISM again and check if this issue disappears.
Method 5: Run System Restore
In most cases, System Restore can solve your can be last one you can try. It can solve DISM error 87: the parameter is incorrect but you need to reinstall certain software.
Step 1. Type system restore in the search box and select it.
Step 2. In the first screen, you are told that the recently installed programs will be removed. If you want to continue this operation, click Next.
Step 3. Select the restore point in the list and click Next.
Step 4. Click Finish to start the restore process.
A more secure way to prepare system image in Windows 11/10/8/7
If the above methods cannot fix DISM error 87, or you encounter other problems in the process of using, you can try another reliable way to create system image and fix related issues, i.e. backup Windows in case of recovery needs.
With free backup software like AOMEI Backupper, you can create a backup image of your OS/files/partitions/disks and save it to internal or external drive, USB flash drive, NAS, cloud service, etc. Thus when system crashes, you can easily restore it to an earlier state. Moreover, it offers you options like:
- Schedule to set up automatic backup daily, weekly, monthly, etc.
- Incremental or differential backup to save only changed files each time and therefore save time & space.
Besides, it provides a tool to create bootable media, thus even when you computer fail to access Windows, you can boot it into WinPE and then perform system recovery as normal.
To create a system image backup in Windows 11/10/8/7:
Step 1. Download free AOMEI Backupper, install and launch it.
Step 2. Click Backup and System Backup in order.
Step 3. Select a location for your backup. If you want to save it to USB, you need to insert the disk into your computer first.
Step 4. Set up settings if needed.
Step 5. Click Start Backup to run the pending operation.
- If your computer crashes suddenly and unprepared, you can create the system image and bootable media on another working PC, and then use them on the problematic PC for dissimilar hardware restore. The Universal Restore feature (available in Pro edition) will ensure the secure boot after restoration.
- AOMEI Backupper includes a tool to create portable version ( avaiable on the technician or techplus edition), which is convenient for IT technician or support engineers. It allows you to create a portable version of this software to removable device and then use it on the any target computer without installing.
You can try above ways to fix DISM error 87: the parameter is incorrect, but sometimes these methods may not solve your problem, or although they do, you encounter some other errors in actual use.
In this case, you may consider trying other methods to prepare Windows image and repair corrupted system files, such as professional backup software, AOMEI Backupper. It not only supports backup and restore, but also contains powerful disk cloning functions, with which you can directly transfer system image to new hard drive.