javavm.uno.dll - Analyze and How to Fix Errors

★★★★☆ Verified File (28.08.2026)

⚠️ Important Notice: Discover the Java Virtual Machine (JVM) essentials with javavm.uno.dll. Essential for Java application execution on Windows. Manually replacing system libraries can brick future Windows updates or cause critical system failures.

Architecture:	32-bit (x86)	Compatible with 32 and 64-bit Windows
Creation date	08.10.2025 22:43:45
File version	4.1.9816.500
Antivirus scan	✅ Clean	No viruses detected.
Digital signature	🟡 Not signed	Signature missing. The file may have been modified.
Hash Integrity	✅ MD5: Verified	File Hash protection is missing.
File size	95 kb.	97280 bytes.

Hashes:

MD5: a9148209bcfc53c32bba9707b39af6dc ✅
SHA-1: 9ebf8798fba04df29d48d2d8eac6171a97fa00a0
SHA-256: 66e31b7208a028688d90cff312198bbef4a09fed3552ce591e4a9b8a1561c54d
SHA-512: fafa64e166257047294150f33ff66d56b74f805ab851324d100bfe1314c049e4fd54585c6ea6a3b8b935fd704b8542b070efde70b6bd17ed165c7017ec49122e

✅ This file is compatible with 32-bit Windows and can run on ✅ 64-bit Windows (via the WOW64 subsystem).

To fix the javavm.uno.dll error without downloading any third-party files, you need to repair the connection between LibreOffice/OpenOffice and your Java Runtime Environment (JRE). This error typically happens when the office software cannot find a valid Java installation.

1. Re-Select Java in LibreOffice/OpenOffice

The most common fix is to manually point the software to your existing Java installation.

Open LibreOffice or OpenOffice.
Navigate to Tools > Options in the top menu.
Expand the LibreOffice (or OpenOffice) section on the left and click Advanced.
Check the box that says "Use a Java runtime environment".
Wait a few seconds for the software to detect your installed Java versions.
Select the latest version from the list.
Click OK and restart the software.

2. Match Architecture (32-bit vs. 64-bit)

If no Java version appears in the list, you likely have a bitness mismatch.

Verify if your LibreOffice/OpenOffice is 32-bit or 64-bit (Check Help > About).
Ensure your installed Java matches that exact architecture. A 64-bit office program cannot use a 32-bit Java installation, and vice versa.

3. Add Java Path Manually

If the software fails to auto-detect Java, add it manually within the same menu.

Go back to Tools > Options > Advanced.
Click the Add... button on the right.
Browse to your Java installation folder (usually located in C:\Program Files\Java\jre... or C:\Program Files (x86)\Java\jre...).
Select the main folder of the JRE and click OK.

4. Repair LibreOffice/OpenOffice Installation

If the DLL file itself is corrupted, you can restore it using the built-in Windows repair tool without downloading anything new.

Press Windows Key + R, type appwiz.cpl, and press Enter.
Find LibreOffice or OpenOffice in the list of installed programs.
Right-click the program and select Change or Repair.
Follow the on-screen wizard instructions to complete the repair process.

📊 Diagnostics Tool: Verify Your `javavm.uno.dll` File

Worried that the file on your PC has been modified by malware? Drop it into the form below. Our script will verify its file size, cryptographic hash (MD5/SHA-1), and check for a valid Microsoft digital signature.

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cppuhelper3MSC.dll
├── cppu3.dll
├── sal3.dll
├── jvmaccess3MSC.dll
├── salhelper3MSC.dll
├── jvmfwk3.dll
├── MSVCR90.dll
├── MSVCP90.dll
└── KERNEL32.dll