Description
Creation date: 22.12.2066 11:17:16
File version: 9.0.1125.51716
Antivirus scan: ✅ OK
Category: System
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.ComponentModel.DataAnnotations.dll
Publisher: Microsoft Corporation
Issuer: Microsoft Code Signing PCA 2011
Encryption algorithm: SHA256
Time stamp: Oct 18 02:57:22 2025 GMT
The System.ComponentModel.DataAnnotations.dll file is a dynamic-link library (DLL) used in Windows environments. DLL files are code libraries that provide functionality to multiple programs without needing to be recompiled or reinstalled. In the context of .NET applications, this specific DLL contains various attributes and classes for data annotation validation.
Issuer: Microsoft Code Signing PCA 2011
Encryption algorithm: SHA256
Time stamp: Oct 18 02:57:22 2025 GMT
MD5: 2acc2d3f4ee39a9d933b4111b08a503c
SHA-1: 511d23d827af640b51cae43284828bd417b17785
SHA-256: 50e56c432ce32085e617eb848be3d628814f7e597fb24c93b7a8830fa829f7e0
SHA-1: 511d23d827af640b51cae43284828bd417b17785
SHA-256: 50e56c432ce32085e617eb848be3d628814f7e597fb24c93b7a8830fa829f7e0
Where it is used
The System.ComponentModel.DataAnnotations.dll file is often utilized in applications developed with Microsoft's .NET Framework or .NET Core. It provides a set of attributes that can be applied to properties, methods, and other elements within the codebase to enforce data validation rules. Common usages include:- Data annotation for enforcing validation logic
- Validation of user input in forms
- Ensuring compliance with business rules at runtime
Errors related to System.ComponentModel.DataAnnotations.dll
Common issues associated with this DLL include:- "System.ComponentModel.DataAnnotations.dll not found": Indicates that the file is missing, which can cause application crashes.
- "Missing System.ComponentModel.DataAnnotations.dll": Similar to the previous error, but more explicitly states that the file is absent from the system.
- Error loading System.ComponentModel.DataAnnotations.dll: This might occur due to corruption or incompatibility issues with other components of your application or operating system.
FAQ
How to fix System.ComponentModel.DataAnnotations.dll missing error?
Download the correct file and copy it to the required program folder.
Is System.ComponentModel.DataAnnotations.dll safe?
The original System.ComponentModel.DataAnnotations.dll file was scanned by the antivirus, result: "OK".
Can I delete System.ComponentModel.DataAnnotations.dll ?
You can move the file to a temporary folder and try to replace.
To fix the following errors:
System.ComponentModel.DataAnnotations.dll was not found
The code execution cannot proceed because System.ComponentModel.DataAnnotations.dll was not found
Failed to load System.ComponentModel.DataAnnotations.dll
The procedure entry point ... could not be located in System.ComponentModel.DataAnnotations.dll
1. Download links:
⬇️ System.ComponentModel.DataAnnotations.dll 9.0.1125.51716 32-bit (x86) 17kb. 🛡️ 🔏 md5: 2acc2d3f4ee39a9d933b4111b08a503c
⬇️ System.ComponentModel.DataAnnotations.dll 3.5.30729.9141 32-bit (x86) 56kb. 🛡️️ md5: e8f185cc5d94be7af4b1128c94f861d2
⬇️ System.ComponentModel.DataAnnotations.dll 6.0.3624.51421 32-bit (x86) 17kb. 🛡️🔏️ md5: b02c72644b4f6d1af1a2e9ec67d735e0
2b. Also try to copy to bin, lib folders.
2c. Try to copy System.ComponentModel.DataAnnotations.dll C:\Program Files (x86)\Your program\
👉 It is recommended to back up the files before replacement.
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
To resolve issues related to the System.ComponentModel.DataAnnotations.dll file:- Reinstall the program: If a specific application is experiencing problems, reinstalling it might restore the necessary DLL files.
- Update Windows: Ensure your operating system and all installed components are up to date. Sometimes updates include critical fixes for missing or corrupted DLLs.
- Manually replace System.ComponentModel.DataAnnotations.dll: You can download a fresh copy from trusted sources, though be cautious when modifying system files. Always back up before making any changes.