Runtime errors, fixed properly.

An index of the error codes people actually hit — what each one means, why it happens, and the fix steps in order. Written from real documentation, checked before it ships.

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Excel & VBA runtime errors

Most searched
Runtime Error 1004
\u201cApplication-defined or object-defined error\u201d in Excel VBA — causes and fixes.
Runtime Error 91
\u201cObject variable or With block variable not set\u201d — the missing Set and the other real causes.
Runtime Error 13
\u201cType mismatch\u201d — text where a number belongs, and how to find the exact line.
Runtime Error 9
\u201cSubscript out of range\u201d — the sheet name or index that isn't there.
Runtime Error 429
\u201cActiveX component can't create object\u201d — missing libraries and 32/64-bit mismatches.
Runtime Error 53
\u201cFile not found\u201d — the path the code believes versus the path on disk.
Runtime Error 76
\u201cPath not found\u201d — the folder level that doesn't exist yet.
Runtime Error 424
\u201cObject required\u201d — the missing Set and the misspelled variable.

Windows & Visual C++ runtime errors

Visual C++ Runtime Library Error
The big dialog — what it means, and the repair order that actually works.
\u201cRequested the Runtime to terminate it in an unusual way\u201d
The exact sentence, explained in plain English, with the fix.
Runtime Error 6025 (R6025)
\u201cpure virtual function call\u201d — games and media apps crashing.
Runtime Error: atibtmon.exe
The AMD brightness utility that crashes on Windows 10/11 — and how to stop it.
Runtime Error 217
The old-app error at startup and shutdown — regional settings are the classic cause.
Runtime Error 216
The legacy access-violation error — compatibility fixes, and when to scan.

Legacy VB & Java errors

Runtime Error 339
\u201cComponent not correctly registered\u201d — MSCOMCTL.OCX and friends, registered properly.
Runtime Error 380
\u201cInvalid property value\u201d — settings and ranges in older business software.
Runtime Error 70
\u201cPermission denied\u201d — locked files, read-only flags, and share rights.
Runtime Error 5
\u201cInvalid procedure call or argument\u201d — the impossible input, found and guarded.
\u201cA JNI error has occurred\u201d
The Minecraft/Java wall — it's a Java version mismatch, and it's fixable.
All Runtime Errors — the Index
Every error page on one list, grouped by family.
One rule on this site: no page here will ever tell you to download a “fixer,” a registry cleaner, or a driver updater. If a fix needs a download, it comes from Microsoft or the software's maker — and the source is named.