Dism Error 87 Fixed Review

Typically displayed in the Command Prompt as Error: 87 – The option is unknown , this error halts your repair efforts immediately. While the message sounds vague, it is actually a very specific syntax error. The good news? It is almost always fixable within minutes.

| 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. | dism error 87 fixed

DISM /Online /Cleanup-Image /RestoreHealth Result: Error: 87 – The option is unknown. Typically displayed in the Command Prompt as Error: