Dism Error 87 Fixed May 2026

DISM Error 87 Fixed: A Comprehensive Guide to Resolving the Issue

2. Verify DISM Version & Available Options

Command Prompt

Right-click and select Run as administrator . Re-type the command in the elevated window. 3. Start the Windows Modules Installer Service

• %windir%\Logs\DISM\dism.log
• %windir%\Logs\CBS\CBS.log Search for "Error: 87" and adjacent context.

Error 87 is most often a syntax, context (online vs offline), or environment issue. Systematic verification of command syntax, elevation, DISM binary path, and correct source media resolves most instances. When persistent, in-place upgrade or reinstallation with matching media is a reliable fallback. dism error 87 fixed