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Error code 12 An error occurred while unpacking does not match checksum
All about fixing error ISDone.dll "an error occurred while unpacking. Does not match checksum. Unarc.dll returned an error code 12" while installing or unzipping any game or application in your windows pc 00:00 Introduction 00:12 Method 1 by force rechecking the game 00:40 Method 2 by changing the zip method and changing compatibility settings ...
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