Open CMD as Administrator. Step 2: Type DISM /? and press Enter. This shows the full help menu. Step 3: To see syntax for specific operations, use:
If you are copying commands from a website, paste them into Notepad first and look for auto‑formatted slashes. If you are unsure about a specific DISM switch, let DISM teach you the correct format.
Now that you know how to fix DISM Error 87, you can return to repairing your Windows image and keeping your PC healthy. Do you have a specific DISM command that still triggers Error 87? Check the official Microsoft documentation for DISM syntax or leave a comment below for a tailored fix. dism error 87 fixed
DISM /Online /Cleanup-Image /RestoreHealth
By carefully reviewing your command, ensuring /Online: has the colon, and running the tool with administrative privileges, you will resolve this error in under two minutes. For the rare cases where the error persists, repairing your system files with SFC or switching to PowerShell will get the job done. Open CMD as Administrator
In this comprehensive guide, we will explain what DISM Error 87 means, why it happens, and provide to fix it permanently. What is DISM Error 87? DISM (Deployment Imaging and Service Management) is a built-in command-line tool in Windows 10 and Windows 11. It is used to repair the Windows system image, including the recovery environment and Windows PE.
| Cause | Explanation | | :--- | :--- | | | Missing spaces, extra slashes, or misspelled words (e.g., Ckeanup instead of Cleanup ). | | Missing colons | Forgetting the colon after Online ( /Online: is required, not just /Online ). | | Wrong slashes | Using backslashes ( \ ) instead of forward slashes ( / ). | | Incorrect command order | DISM is sensitive to the sequence of arguments. | | Corrupt DISM binary | Rare, but possible if system files are damaged. | This shows the full help menu
DISM /Online: /? DISM /Image: /? DISM /Cleanup-Image /? If a particular switch doesn’t appear in the help list, it doesn’t exist in your version of Windows (e.g., some switches are only for Windows PE). If your path contains spaces or unusual characters, wrap the path in double quotes and escape spaces properly.
