If registry keys are irreparably damaged, a fresh install is best.

Preparation:

Reinstall:

This is the most direct fix. You will recreate the missing or corrupted registry keys.

Step 1: Open Registry Editor as Administrator (right-click > Run as administrator).

Step 2: Navigate to the following path (if you are on 64-bit Windows with a 32-bit AutoData Top installation):

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\AutoData\Top

If you have a 32-bit Windows or a native 64-bit AutoData version, use:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\AutoData\Top

Step 3: Look for a key named Language or UILanguage. If missing, create it:

Step 4: Set its value to your preferred language using the exact codes AutoData expects:

| Language | Registry Value to Enter | |----------|-------------------------| | English | ENU or English | | German | DEU or German | | French | FRA or French | | Spanish | ESN or Spanish | | Italian | ITA or Italian | | Polish | PLK or Polish |

Tip: If unsure, try ENU first, then launch AutoData.

Step 5: Repeat the same process in the HKEY_CURRENT_USER hive:

HKEY_CURRENT_USER\Software\AutoData\Top

Create the same Language string value.

Step 6: Close Registry Editor and restart your computer. Launch AutoData Top normally.

Not usually. It is almost always a configuration or permission issue. However, some malware corrupts registry keys randomly, so run a full antivirus scan (e.g., Malwarebytes, Windows Defender) if the error appears unexpectedly alongside other system issues.

The most common reason is a lack of privileges.

Ideally, yes. AutoData Top’s registry language setting should match the Windows display language, especially for German, French, and Spanish versions. Mismatches can trigger read errors.