Install Isarcextract.dll May 2026

Typically, these errors pop up with a message like: "An error occurred when unpacking: archive corrupted! Unarc.dll returned an error code: -1" or -11 .

Under the tab, click Settings in the Performance section.

Typically, these errors pop up with a message like: "An error occurred when unpacking: archive corrupted! Unarc.dll returned an error code: -1" or -11 .

Under the tab, click Settings in the Performance section.