Discarding Work
Discarding a workspace (from a private or collaborative workspace) cancels all modifications made since the last dispatch.
Discard of work causes loss of work carried out since opening of the private or collaborative workspace, including modifications to the desktop. A warning message reminds the user of this. Use discard with care.
Discarding work from a private workspace
In MEGA, to discard your private workspace:
2. In the MEGA menu bar, select File > Discard.

You can also discard your private workspace at disconnection, see
"Exiting a Session" (choose not to dispatch modifications).
Discarding work from a collaborative workspace
Only the collaborative workspace Owner can discard the collaborative workspace.

See the
MEGA Common Features guide, section "Working in a Collaborative Workspace".
In MEGA, to discard your collaborative workspace:
2. In the MEGA menu bar, select File > Workspace > Discard.