Cdx Error 0x3 1 Exclusive < FAST ✦ >

USE MyTable EXCLUSIVE
REINDEX   && or other exclusive-required operation

If a backup or script copied the .DBF but not the .CDX, or copied a CDX from a different table (same name but different structure), the engine will reject it.

Once resolved, take steps to ensure error CDX 0x3 (1 exclusive) does not return: cdx error 0x3 1 exclusive

If error appears only in PIX/RenderDoc but not in production: USE MyTable EXCLUSIVE REINDEX && or other exclusive-required

If you are reading this, you have likely encountered a frustrating pop-up error message while trying to access a database, run a report, or open an application. The error typically reads: If a backup or script copied the

"CDX error 0x3 (1 exclusive)"

For the uninitiated, this error seems cryptic and technical. However, for those who work with Microsoft Visual FoxPro (VFP) databases or applications that rely on VFP’s native indexing system (.CDX files), this is a well-known—if often misunderstood—error.

This article will dissect the error in plain language, explore its root causes, and provide step-by-step troubleshooting and resolution methods. By the end, you will not only fix the error but also understand how to prevent it from recurring.