If the report works on your development machine but fails on a client's computer, you must include u25idautomation.dll in your application's installer or manually copy it to the client's SysWOW64 folder. 🚩 Version Mismatch
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When Crystal Reports fails to load, export, or refresh data, and the error log points to u25idautomation.dll , it typically indicates a missing, corrupted, or incorrectly registered DLL file. This article provides an in-depth exploration of what this file is, why Crystal Reports depends on it, common error scenarios, and step-by-step solutions to resolve the issue permanently. If the report works on your development machine