Open the (as shown in Step 3).
(if not already present)
Inno Setup (which powers ISDone/Unarc) has a known bug: it hates non-English characters in file paths. If your Windows username contains accented letters, Cyrillic, or Chinese characters, the temp decompression path becomes corrupted. isdonedll error unarcdll error7 best
:
A: No, it’s a legitimate InstallShield file. However, malware sometimes disguises itself as ISDone.dll. Only download repacks from trusted sources. Open the (as shown in Step 3)
Antivirus software mistakenly flagged and quarantined files during extraction.
If the DLL system files have become unregistered or corrupted within Windows, you can force the operating system to re-recognize them using the Command Prompt. How to Fix Unrac.dll return an error code-7 Error : A: No, it’s a legitimate InstallShield file
If your RAM has "bad sectors," it will fail during the high-stress decompression of an archive.
: Real-time protection often blocks decompression; turn it off during the install.
In an elevated , type chkdsk c: /f /r and press Enter.
Highlight your primary Windows drive (typically C:) and check .