oc30.dll: download the file and fix the error

32-bit (x86) Microsoft® OLE Controls Development Kit Scanned by antivirus

oc30.dll is a file of the software Microsoft® OLE Controls Development Kit (“Microsoft® OLE Control runtime DLL”), published by Microsoft Corporation. Version offered here: 3.20, 32-bit.

If this file is missing or damaged, the program that uses it does not start and Windows displays an error message. Two methods can fix the error, below.

Method 1 · quick · about 1 minute

Download only oc30.dll

Ideal if only this file is reported missing: you replace a single file, without reinstalling anything.

⇓ Download oc30.dll .zip file: the DLL + its instructions · downloaded 2,809 times

Version: 3.20
Architecture: 32-bit (x86)
Size: 640.51 KB
Publisher: Microsoft Corporation

Then:

Extract oc30.dll from the zip file and copy it to the folder of the program showing the error (where its .exe file is).
Still getting the error? Copy it to C:\Windows\SysWOW64 (64-bit Windows) or C:\Windows\System32 (32-bit Windows), then restart.

SHA-256: 9fbe8f35fc0b150a57e2660a368a5fb0a2051561476e5c02f5fb51f733a18256 · Check on VirusTotal · Product: Microsoft® OLE Controls Development Kit

Method 2 ·complete · depends on the program

Reinstall the program that shows the error

The program normally provides oc30.dll itself, in the exact version it expects. Recommended if several files are missing or if the error comes back.

Settings › Apps › Installed apps: uninstall the program or game concerned.
Reinstall it from its original setup program, then restart your computer.

Error messages related to oc30.dll

The program can't start because oc30.dll is missing.
Error loading oc30.dll. The specified module could not be found.
Failed to load oc30.dll

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