Uploaded October 2016 | Updated September 2026, 2 weeks ago
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Unarc.dll/Isdone.dll is a quite important system file while working with the application which supports graphic. Mainly this error occurs in video games and software which needed heavy graphics. Unarc.dll or Isdone.dll errors are very common for Windows 7 /8 / 10 users. In most of the cases unarc.dll file has been removed, misplaced or corrupted by malicious software present in your System or a damaged Windows registry.
In this video, I am showing 9 methods " How to Fix Unarc.dll returned an Error code -1/5/6/7/11/12/14. ". Each method given in this video is unique and effective for solving any Unarc.dll returned an Error code -1/5/6/7/11/12/14 errors.
This is a very simple and straightforward video, in which I am trying Fix Unarc.dll returned an Error code -1/5/6/7/11/12/14 error. Hopefully, you will learn from this video.
Commands used in this video.
Method 3: Disk Clean up
takeown /F C:\$Windows.~WS\* /R /A
icacls C:\$Windows.~WS\*.* /T /grant administrators:F
rmdir /S /Q C:\$Windows.~WS\
Method 5: Run the Deployment Image Servicing and Management (DISM) Tool
DISM.exe /Online /Cleanup-image /Restorehealth
Method 6: Improve performance by optimizing your hard drive
1. Improve performance by Repairing Bad Sectors in Hard Drive
Type: chkdsk space /f /r
Method 9:Re-register dll file using regsvr32 Tool
regsvr32 %systemroot%\System32\unarc.dll
regsvr32 %systemroot%\SysWoW64\unarc.dll
Generaly error messages for unarc.dll and Isdone.dll
An error occurred while unpacking: archive corrupted unarc.dll returned an error code: 1, 6, 7, 11, 12 error: archive data corrupted (decompression fails)
ISDone.dll error
An error occurred while unpacking: archive corrupted!
Unarc.dll returned an error code: 7
Unarc.dll returned an error code: 6
Unarc.dll returned an error code: 12
Unarc.dll returned an error code: 1
ERROR: archive data corrupted (decompression fails)
Windows could not start because the following file is missing or corrupt: Windows\system32\ unarc.dll . Please re-install a copy of the above file.
This application failed to start because unarc.dll was not found. Re-installing the application may fix this problem."
The file unarc.dll is missing
Unarc.dll Not Found
Error run unarc.dll
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Visit: codescoder.com
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(Affiliate link) DLL-files.com Client, Fast relief from any DLL error at any time : bit.ly/2Nn8d1W
DLL-FILES.COM CLIENT lifetime license offers you ongoing support, coverage and peace of mind
Unarc.dll/Isdone.dll is a quite important system file while working with the application which supports graphic. Mainly this error occurs in video games and software which needed heavy graphics. Unarc.dll or Isdone.dll errors are very common for Windows 7 /8 / 10 users. In most of the cases unarc.dll file has been removed, misplaced or corrupted by malicious software present in your System or a damaged Windows registry.
In this video, I am showing 9 methods " How to Fix Unarc.dll returned an Error code -1/5/6/7/11/12/14. ". Each method given in this video is unique and effective for solving any Unarc.dll returned an Error code -1/5/6/7/11/12/14 errors.
This is a very simple and straightforward video, in which I am trying Fix Unarc.dll returned an Error code -1/5/6/7/11/12/14 error. Hopefully, you will learn from this video.
Commands used in this video.
Method 3: Disk Clean up
takeown /F C:\$Windows.~WS\* /R /A
icacls C:\$Windows.~WS\*.* /T /grant administrators:F
rmdir /S /Q C:\$Windows.~WS\
Method 5: Run the Deployment Image Servicing and Management (DISM) Tool
DISM.exe /Online /Cleanup-image /Restorehealth
Method 6: Improve performance by optimizing your hard drive
1. Improve performance by Repairing Bad Sectors in Hard Drive
Type: chkdsk space /f /r
Method 9:Re-register dll file using regsvr32 Tool
regsvr32 %systemroot%\System32\unarc.dll
regsvr32 %systemroot%\SysWoW64\unarc.dll
Generaly error messages for unarc.dll and Isdone.dll
An error occurred while unpacking: archive corrupted unarc.dll returned an error code: 1, 6, 7, 11, 12 error: archive data corrupted (decompression fails)
ISDone.dll error
An error occurred while unpacking: archive corrupted!
Unarc.dll returned an error code: 7
Unarc.dll returned an error code: 6
Unarc.dll returned an error code: 12
Unarc.dll returned an error code: 1
ERROR: archive data corrupted (decompression fails)
Windows could not start because the following file is missing or corrupt: Windows\system32\ unarc.dll . Please re-install a copy of the above file.
This application failed to start because unarc.dll was not found. Re-installing the application may fix this problem."
The file unarc.dll is missing
Unarc.dll Not Found
Error run unarc.dll
