The STDOLE32.TLB Excel error is a common issue that frustrates many users. It is the result of crashing or failing Excel applications when in use. The error indicates that some code is not working during the runtime but it doesn’t mean it got corrupted. Such an error frequently appears as an annoying notification and sticks on your screen until it is fixed. This guide will explain the causes and solutions to STDOLE32.TLB error when opening Excel problem.