tc7z.dll - Analyze and How to Fix Errors

★★★★☆ Verified File (27.08.2026)

⚠️ Important Notice: dll for Windows compatibility issues. Essential for software execution. 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	15.08.2022 19:18:26
File version	22.1.0.0
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	232 kb.	237568 bytes.

Hashes:

MD5: 46a454a3c70abd4bb250635c9c4acece ✅
SHA-1: 7c4d76ed88600d7c8c5f1d87ed5283b548d4bdc0
SHA-256: 6b96264ce01e40ce979e16146a8064d2e917e92dcc545ea21d2a1ba56f86636c
SHA-512: afc5bb40413d2e1a448582c96d3a1daf4d7b6a2b152e02e382608f2fd1d62d46b88cad911701eec5e448a4f09896c69aaf0461b50e2e34436b33880722433534

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

How to fix errors tc7z.dll without downloading files.

The tc7z.dll file is a critical plugin used by Total Commander to handle 7z archives. If it is missing or corrupted, you do not need to download it from sketchy third-party websites. You can fix it using your existing files.

Use Total Commander's Built-in Copy

Total Commander stores a backup copy of this file in its installation folder under a different name.

Close Total Commander.
Open Windows File Explorer (Press Win + E).
Navigate to your Total Commander directory (usually C:\TotalCMD\ or C:\Program Files\TotalCMD\).
Look for a file named tc7z64.dll (for 64-bit) or tc7z.dll in a subfolder like Plugins\arc\.
Copy that file.
Paste it directly into the main Total Commander root folder.
Rename the copied file exactly to tc7z.dll if it has a different name.

Reinstall from the Official Installer

If the backup file is missing, the safest way to restore it without an external download is using your original installer.

Find the Total Commander installer (tcmdXXXXr.exe) on your hard drive.
Right-click the installer and extract it using a tool like WinRAR or Windows Explorer.
Open the extracted folder.
Locate tc7z.dll inside the archive.
Copy it to your active Total Commander installation directory.

Check the Recycle Bin

Sometimes the file is accidentally deleted during an update or by antivirus software.

Open your Recycle Bin.
Search for tc7z.dll.
Right-click the file and select Restore.

📊 Diagnostics Tool: Verify Your `tc7z.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.

Connected files:
KERNEL32.dll
└── OLEAUT32.dll

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