Windows 10: missing isdone.dll and unarc.dll

Discus and support missing isdone.dll and unarc.dll in Windows 10 Support to solve the problem; An installer is asking for isdone.dll and unarc.dll for decompression. But my fresh install of Windows 10 home 64-bit May 2020 version 2004 does not... Discussion in 'Windows 10 Support' started by person45, Jul 18, 2020.

  1. PERSON45
    person45 Win User

    missing isdone.dll and unarc.dll


    An installer is asking for isdone.dll and unarc.dll for decompression.

    But my fresh install of Windows 10 home 64-bit May 2020 version 2004 does not have these dll files in the system32 or syswow64 folder.

    Where do I get the 64-bit versions of the .dll files?

    :)
     
    person45, Jul 18, 2020
    #1
  2. BOLOY CHAKI
    Boloy Chaki Win User

    Can't register ISDone.dll and unarc.dll

    I need to re-register ISDone.dll and unarc.dll. But when I use the command prompt, it says, "The module "unarc.dll" was loaded but the entry point DllRegisterServer was not found. Make sure that "unarc.dll" is a valid DLL or OCX file and then try again."
    Same happens with ISDone.dll. I ran command prompt as administrator and used "regsvr32" command. What can I do now?
     
    Boloy Chaki, Jul 18, 2020
    #2
  3. ALFREDTHOMAS900
    AlfredThomas900 Win User
    Can't register ISDone.dll and unarc.dll through CMD(Admin)

    I need to re-register ISDone.dll and unarc.dll. Because when most of the time when I tired to install large games' setups, it just fails and shows decompression failed and various error codes of ISDone.dll and unarc.dll
    and no matter how many times I tried, the setup just fails. I have tried many possible solutions. I have already tried clean boot, DISM.exe method, Defragmentation method and many other. Some game setups did install everything completely only when I changed
    the priority of the setup process to high and also when I disabled the Super fetch service through services.msc command in RUN. That's when I saw the solution of re-registering these corrupt DDL files. But when I tried to re-register, and ran regsvr32 unarc.dll
    or ISDone.dll, the command prompt, it says, "The module "unarc.dll" was loaded but the entry point DllRegisterServer was not found. Make sure that "unarc.dll" is a valid DLL or OCX file and then try again." Same happens with ISDone.dll. I ran command prompt
    as administrator and used "regsvr32" command.

    My System is running in 64 bit Windows 10 Pro. I got both of these files of 32 bit version. I hadn't seen any 64 bit version of these files on the web. And I tried by copying both of these files to System32 and SysWOW64
    separately and re-registering them through the CMD (Admin) both by the above said command and also by the command
    regsvr32 %systemroot%\system32\unarc.dll.
    But nothing seems to be working. Whenever I try it, it just pops up the above said error message. What can I do now? Please help me
    on this matter. Expecting your earliest response on this matter.

    Thank you.

    Moved from:
    Windows 10 / Windows settings
     
    AlfredThomas900, Jul 18, 2020
    #3
  4. LORDSADLER
    LordSadler Win User

    missing isdone.dll and unarc.dll

    isdone.dll error

    i have windows 8.1 32 bit and when i try to install pes 2016 or 2017 ie shows isdone.dll -14 erroe in pes 2017 and code -6 in pes 2016 pls help i tryied to download and replace unarc.dll and ISDone.dll many times from many sites but it
    didnt work
     
    LordSadler, Jul 18, 2020
    #4
Thema:

missing isdone.dll and unarc.dll

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