# Unreal engine 4 installer doesn't work - DLL required **URL:** \ **Category:** Getting Started & Setup\ **Tags:** dll, unreal-engine, Installation, question\ **Created:** [March 19, 2014, 7:39pm UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390 "2014-03-19T19:39:36Z")\ **Posts on this page:** 18\ **Page:** 1
**Author:** ![gates1412\_1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@gates1412\_1](https://forums.unrealengine.com/u/gates1412_1)\ **Post date:** [March 19, 2014, 7:39pm UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/1 "2014-03-19T19:39:36Z")
I just subscribed the $19/mo plan and downloaded the installer. But when I start the installation. It says there is a problem with this windows installer package. A DLL required for this install to complete could not be run. Contact your personnel or package vendor. And the installation stops. Any help on this? ---
**Author:** ![anonymous\_user\_759e5c3a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_759e5c3a](https://forums.unrealengine.com/u/anonymous_user_759e5c3a)\ **Post date:** [March 19, 2014, 7:52pm UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/2 "2014-03-19T19:52:43Z")
Hello, Thank you for your report. Could you please run the installer with the following command and then post the UnrealEngineInstallerLog.txt that is created: msiexec /i UnrealEngineInstaller.msi /L\*V UnrealEngineInstallerLog.txt That will allow us to further investigate the issue. Thanks! ---
**Author:** ![Fiskislod](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Fiskislod](https://forums.unrealengine.com/u/Fiskislod)\ **Post date:** [March 19, 2014, 8:00pm UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/3 "2014-03-19T20:00:31Z")
What is the size of the `UnrealEngineInstaller.msi` file that you downloaded? It is possible that it was not a complete download. If you right click on the file and choose properties, you should see that it is `51.3 MB (53,821,440 bytes)`. ---
**Author:** ![gates1412\_1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@gates1412\_1](https://forums.unrealengine.com/u/gates1412_1)\ **Post date:** [March 19, 2014, 8:02pm UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/4 "2014-03-19T20:02:49Z")
Installer works now. I start the cmd.exe in administration permission. And launch the installer in cmd. Then it works. Probably it’s some permission issues. ---
**Author:** ![gates1412\_1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@gates1412\_1](https://forums.unrealengine.com/u/gates1412_1)\ **Post date:** [March 19, 2014, 8:03pm UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/5 "2014-03-19T20:03:43Z")
I downloaded the 51.3MB one. ---
**Author:** ![hamyshank](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@hamyshank](https://forums.unrealengine.com/u/hamyshank)\ **Post date:** [March 20, 2014, 4:23am UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/6 "2014-03-20T04:23:45Z")
here is mine === Verbose logging started: 3/20/2014 0:22:18 Build type: SHIP UNICODE 4.05.6002.00 Calling process: C:\Windows\system32\msiexec.exe === MSI (c) (B4:D4) [00:22:18:449]: Resetting cached policy values MSI (c) (B4:D4) [00:22:18:449]: Machine policy value ‘Debug’ is 0 MSI (c) (B4:D4) [00:22:18:449]: \*\*\*\*\*\*\* RunEngine: \*\*\*\*\*\*\* Product: UnrealEngineInstaller.msi \*\*\*\*\*\*\* Action: \*\*\*\*\*\*\* CommandLine: \*\*\*\*\*\*\*\*\*\* MSI (c) (B4:D4) [00:22:18:458]: Machine policy value ‘DisableUserInstalls’ is 0 MSI (c) (B4:D4) [00:22:18:464]: Note: 1: 1402 2: HKEY\_CURRENT\_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer 3: 2 MSI (c) (B4:D4) [00:22:18:564]: SOFTWARE RESTRICTION POLICY: Verifying package → ‘c:\Users\hamyshank\Documents\UnrealEngineInstaller.msi’ against software restriction policy MSI (c) (B4:D4) [00:22:18:564]: SOFTWARE RESTRICTION POLICY: c:\Users\hamyshank\Documents\UnrealEngineInstaller.msi has a digital signature MSI (c) (B4:D4) [00:22:18:899]: SOFTWARE RESTRICTION POLICY: c:\Users\hamyshank\Documents\UnrealEngineInstaller.msi is permitted to run at the ‘unrestricted’ authorization level. MSI (c) (B4:D4) [00:22:18:903]: Cloaking enabled. MSI (c) (B4:D4) [00:22:18:903]: Attempting to enable all disabled privileges before calling Install on Server MSI (c) (B4:D4) [00:22:18:910]: End dialog not enabled MSI (c) (B4:D4) [00:22:18:910]: Original package ==\> c:\Users\hamyshank\Documents\UnrealEngineInstaller.msi MSI (c) (B4:D4) [00:22:18:910]: Package we’re running from ==\> c:\Users\HAMYSH~1\AppData\Local\Temp\2499925.msi MSI (c) (B4:D4) [00:22:18:913]: APPCOMPAT: looking for appcompat database entry with ProductCode ‘{ADB715E9-AEE5-48EA-BCA9-63F4A764A80F}’. MSI (c) (B4:D4) [00:22:18:914]: APPCOMPAT: no matching ProductCode found in database. MSI (c) (B4:D4) [00:22:18:918]: MSCOREE not loaded loading copy from system32 This installation package is not supported by this processor type. Contact your product vendor. c:\Users\hamyshank\Documents\UnrealEngineInstaller.msi MSI (c) (B4:D4) [00:22:18:921]: Note: 1: 1708 MSI (c) (B4:D4) [00:22:18:921]: Product: Unreal Engine – Installation failed. MSI (c) (B4:D4) [00:22:18:922]: Windows Installer installed the product. Product Name: Unreal Engine. Product Version: 0.1.0.0. Product Language: 1033. Installation success or error status: 1633. MSI (c) (B4:D4) [00:22:18:927]: MainEngineThread is returning 1633 === Verbose logging stopped: 3/20/2014 0:22:18 === ---
**Author:** ![kassane](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/kassane/32/469014_2.png) [@kassane](https://forums.unrealengine.com/u/kassane)\ **Post date:** [March 22, 2014, 4:09pm UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/7 "2014-03-22T16:09:19Z")
My errorlog: link text ---
**Author:** ![Makarei](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Makarei](https://forums.unrealengine.com/u/Makarei)\ **Post date:** [March 24, 2014, 2:18pm UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/8 "2014-03-24T14:18:49Z")
getting the same issue, here is my log thingy also. link text ---
**Author:** ![Carlos\_Cuello](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Carlos\_Cuello](https://forums.unrealengine.com/u/Carlos_Cuello)\ **Post date:** [March 24, 2014, 2:24pm UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/9 "2014-03-24T14:24:01Z")
Hi Makarei, can you post your dxdiag file? Are you using a 32bit OS or cpu? ---
**Author:** ![Makarei](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Makarei](https://forums.unrealengine.com/u/Makarei)\ **Post date:** [March 24, 2014, 2:34pm UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/10 "2014-03-24T14:34:05Z")
I’m using a 32bit windows 7. link text ---
**Author:** ![Carlos\_Cuello](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Carlos\_Cuello](https://forums.unrealengine.com/u/Carlos_Cuello)\ **Post date:** [March 24, 2014, 2:39pm UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/11 "2014-03-24T14:39:29Z")
Hi Makarei, unfortunately the installing the Unreal Engine requires a 64bit OS and CPU. Apologies for the inconvenience. ---
**Author:** ![Makarei](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Makarei](https://forums.unrealengine.com/u/Makarei)\ **Post date:** [March 24, 2014, 3:31pm UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/12 "2014-03-24T15:31:24Z")
ok i will cancel my subscription and go back to unity. hopefully i can make a game to buy a better computer ---
**Author:** ![anonymous\_user\_0837b42c1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_0837b42c1](https://forums.unrealengine.com/u/anonymous_user_0837b42c1)\ **Post date:** [March 24, 2014, 8:42pm UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/13 "2014-03-24T20:42:54Z")
It seems like you are running into a similar issue to the one reported in this thread: Can you try grabbing an installer from the site Carlos posted in his answer to that thread? ---
**Author:** ![Neverlandadventure](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Neverlandadventure](https://forums.unrealengine.com/u/Neverlandadventure)\ **Post date:** [May 8, 2014, 6:58pm UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/14 "2014-05-08T18:58:49Z")
I am also having the same Issue I have a 64 bit operating system, just bought UE4 and just tried to open the MSI and just gets the same error. Also followed these steps to get a log, but it couldn’t find it even when I put it on my C drive and changed the name to suit this example etc. Thanks for the info. Is that the only language set on that machine? It would be useful to see some logs. Can you try to do the following… • Place the msi on the root of C drive • WindowsKey+R and enter:- • msiexec /i C:\UnrealEngineInstaller.msi /L\*V C:\UnrealEngineInstallerLog.txt • Replacing “UnrealEngineInstaller.msi” with the actual msi filename And then upload the UnrealEngineInstallerLog.txt No idea why it could be doing this, thanks. ---
**Author:** ![Neverlandadventure](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Neverlandadventure](https://forums.unrealengine.com/u/Neverlandadventure)\ **Post date:** [May 8, 2014, 7:06pm UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/15 "2014-05-08T19:06:54Z")
Fixed with another thread, this may be helpful for others too. This issue is probably being caused by the fact that your user and/or group lack some required permissions on the temp folder the installer extracts to. This folder can usually be found here: c:\Users{YOUR\_USER\_NAME}\AppData\Local\Temp In your case, I would guess you have permission settings that are preventing the installer from executing from that folder. Can you check to see if your user has ‘Full Control’ of the folder below? If you don’t mind sharing, it would be really helpful for us to know what your security settings are for this folder before you make any changes. C:\Users\AppData\Local\Temp If you find none of your groups/users have Full Control you could try a few things: First, as Leigh mentioned, you can run the installer from a command prompt that has been elevated. The one bit of info that is missing from Leigh’s description of the fix is that you need to select Run as Administrator when starting the command prompt. An alternative fix is to just modify the folder permission settings so your user/group has Full Control. I hope you try this and report back because we have had a hard time tracking down the root cause of this issue. You can do this by right clicking the folder and selecting properties. The Security tab should show you who has access to the folder and what they can do with the contents. For example, if I wanted to fix something like this locally I could give the ‘Users’ group Full Control of the temp folder on my machine. ---
**Author:** ![Subscapularis](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Subscapularis](https://forums.unrealengine.com/u/Subscapularis)\ **Post date:** [March 2, 2016, 8:52pm UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/16 "2016-03-02T20:52:30Z")
Halfway down this page are super simple instructions to add “Run MSI as administrator from Command Prompt”. > **[How To Run MSI File As Administrator From Command Prompt In Windows](https://www.intowindows.com/how-to-run-msi-file-as-administrator-from-command-prompt-in-windows/)** > > In Windows Vista, Windows 7, Windows 8 and the latest Windows 10, when you right-click on an executable (.exe) file, Run as administrator option appears This is by far the easiest workaround. ---
**Author:** ![adevcalledred](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@adevcalledred](https://forums.unrealengine.com/u/adevcalledred)\ **Post date:** [August 28, 2016, 6:42am UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/17 "2016-08-28T06:42:41Z")
I know this is kind of old but for anyone wondering how to install from the command prompt just cd to the directory that has the file then copy and paste the name of the file including .msi in the prompt. Also thanks for the suggestion! Worked great for me. ---
**Author:** ![Bryan\_Mock](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Bryan\_Mock](https://forums.unrealengine.com/u/Bryan_Mock)\ **Post date:** [October 23, 2016, 2:12am UTC](https://forums.unrealengine.com/t/unreal-engine-4-installer-doesnt-work-dll-required/277390/18 "2016-10-23T02:12:54Z")
This worked for me. Thank you. I’m always having trouble with my local data folder, it gets reset for no reason at all. Single user of the computer too.