Sometimes, Error 87 appears because of a corrupted manifest. In this rare case:

While DISM is a powerful command-line utility designed to fix corruption in the Windows operating system, it is notoriously finicky about syntax and versions. When you are already dealing with a computer that is acting up—perhaps crashing, freezing, or failing to update—seeing an error message from the very tool meant to fix it can be exasperating.

For example:

This sounds basic, but Error 87 sometimes masks a permission issue. On Windows 7, if you run DISM without elevation, the context is wrong, and the parser may throw generic "unknown option" errors.

You gain limited support for:

dism /online /get-currentedition