System.Runtime.Serialization.dll - Missing DLL Error Fix for Windows
★★★★★ Verified File (12.07.2026) The file was obtained from the pack DedproxyDescription
Creation date: 26.12.2059 22:30:37
File version: 9.0.1125.51716
Antivirus scan: ✅ OK
Category: Runtime
File size: 16.8 kb.
Architecture: 32-bit (x86)
✅ This file is compatible with 32-bit Windows and can run on 64-bit Windows (via the WOW64 subsystem).
How to determine your system architecture: Press keys Win+R , enter symbols wmic os get osarchitecture , press Enter.
Digital file signature System.Runtime.Serialization.dll
Issuer: Microsoft Code Signing PCA 2011
Encryption algorithm: SHA256
Time stamp: Oct 18 02:34:41 2025 GMT
System.Runtime.Serialization.dll is a Dynamic Link Library (DLL) file used in the Windows operating system. DLL files are essential for applications and services to run smoothly, as they contain code and resources that can be shared across multiple programs.
SHA-1: e9d03f74aa6b28178f8280cbfa34079f11803da4
SHA-256: a6f5dc2df099c41f27bf2300aef3652fc60460717cfeea00e133c97acd008762
Where it is used
This specific DLL file is part of the .NET Framework and is commonly associated with various Microsoft applications and services. It provides serialization support, which is crucial for converting data structures to a format that can be stored or transmitted over a network.
Errors related to System.Runtime.Serialization.dll
You might encounter errors such as "System.Runtime.Serialization.dll not found," "missing System.Runtime.Serialization.dll," or "error loading System.Runtime.Serialization.dll." These issues can occur due to a missing, corrupted, or outdated version of the DLL file.
File security
The DLL characteristics indicate that this file is safe and reliable. It does not contain any suspicious elements like potential viruses or malware. However, it's always a good practice to ensure you're using legitimate sources for system files.
FAQ
How to fix System.Runtime.Serialization.dll missing error?
Download the correct file and copy it to the required program folder.
Is System.Runtime.Serialization.dll safe?
The original System.Runtime.Serialization.dll file was scanned by the antivirus, result: "OK".
Can I delete System.Runtime.Serialization.dll ?
You can move the file to a temporary folder and try to replace.
To fix the following errors:
System.Runtime.Serialization.dll was not found
The code execution cannot proceed because System.Runtime.Serialization.dll was not found
Failed to load System.Runtime.Serialization.dll
The procedure entry point ... could not be located in System.Runtime.Serialization.dll
1. Download links:
2b. Also try to copy to bin, lib folders.
2c. Try to copy System.Runtime.Serialization.dll C:\Program Files (x86)\Your program\
👉 Before replacing the files, make backups.
How do I switch to the current Windows directory?
- Press and hold the key "win" on the keyboard and press the key "r" , then write %windir% and press the key Enter.
How to switch to the directory Program Files (x86) ?
- Press Win+R then enter %ProgramFiles(x86)% and after press Enter.
Advanced users only:
3. Copy into the folder C:\Windows\System32\
3b. Copy into the folder C:\Windows\SysWOW64\
How to fix errors
- Reinstall the program: If this error is related to an application, try reinstalling the program. This can often resolve issues with missing or corrupted DLL files.
- Update Windows: Ensure your operating system is up-to-date. Sometimes, updates include necessary fixes and improvements for system files.
- Manually replace System.Runtime.Serialization.dll: If the issue persists, you might need to manually replace the file. Use a legitimate source to download the correct version of the DLL file from trusted sites like Microsoft's official website or other reputable sources.
Conclusion
The System.Runtime.Serialization.dll is an essential part of .NET Framework, used for serialization support in various applications. If you encounter issues with this file, follow the steps provided to resolve them.
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Microsoft Corporation