Did you just notice a random error that describes itself as: QuickBooks has encountered a problem and needs to be shut down for any further explanation? Well, this particular error might show up if the operating system is corrupt or any of the QuickBooks components is not stable or working. This error is often related to any sort of data damage. Getting rid of this error is easy, as we have curated this segment sharing the complete set of steps that you can implement to get rid of the QuickBooks error code 4120. Let us have a look: