# UE4 will not login to authenticate and program crashing **URL:** \ **Category:** Getting Started & Setup\ **Tags:** launcher, unreal-engine, Installation, question\ **Created:** [September 11, 2014, 12:21am UTC](https://forums.unrealengine.com/t/ue4-will-not-login-to-authenticate-and-program-crashing/293400 "2014-09-11T00:21:26Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![ajbombadill](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/ajbombadill/32/625126_2.png) [@ajbombadill](https://forums.unrealengine.com/u/ajbombadill)\ **Post date:** [September 11, 2014, 12:21am UTC](https://forums.unrealengine.com/t/ue4-will-not-login-to-authenticate-and-program-crashing/293400/1 "2014-09-11T00:21:26Z")
I had to reinstall program due to bad sectors of HDD, effected 2 other programs, but they reinstalled fine. Program starts then immediately crashes, internet is fine and all other programs that need internet access working. It has been working fine for 4 months until this problem occurred. System: OS Name Microsoft Windows 7 Professional Version 6.1.7601 Service Pack 1 Build 7601 System Manufacturer ASUS System Model All Series System Type x64-based PC Processor Intel(R) Core™ i5-4670 CPU @ 3.40GHz, 3401 Mhz, 4 Core(s), 4 Logical Processor(s) BIOS Version/Date American Megatrends Inc. 1802, 1/28/2014 Installed Physical Memory (RAM) 24.0 GB Name NVIDIA GeForce GTX 660 X2 in SLI Windows problem details: Problem signature: Problem Event Name: APPCRASH Application Name: UnrealEngineLauncher.exe Application Version: 1.7.0.0 Application Timestamp: 54069a1d Fault Module Name: StackHash\_48f1 Fault Module Version: 6.1.7601.18247 Fault Module Timestamp: 521eaf24 Exception Code: c0000374 Exception Offset: 00000000000c4102 OS Version: 6.1.7601.2.1.0.256.48 Locale ID: 1033 Additional Information 1: 48f1 Additional Information 2: 48f1d60866f5bf660001721589709748 Additional Information 3: d5f9 Additional Information 4: d5f99a0ce239b524614fd552c58cbf84 ---
**Author:** ![ajbombadill](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/ajbombadill/32/625126_2.png) [@ajbombadill](https://forums.unrealengine.com/u/ajbombadill)\ **Post date:** [September 11, 2014, 12:35am UTC](https://forums.unrealengine.com/t/ue4-will-not-login-to-authenticate-and-program-crashing/293400/2 "2014-09-11T00:35:29Z")
Dump file of last attempt Sept 10 ---
**Author:** ![ajbombadill](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/ajbombadill/32/625126_2.png) [@ajbombadill](https://forums.unrealengine.com/u/ajbombadill)\ **Post date:** [September 11, 2014, 12:44am UTC](https://forums.unrealengine.com/t/ue4-will-not-login-to-authenticate-and-program-crashing/293400/3 "2014-09-11T00:44:40Z")
Log File from last attempt LogFile ---
**Author:** ![ajbombadill](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/ajbombadill/32/625126_2.png) [@ajbombadill](https://forums.unrealengine.com/u/ajbombadill)\ **Post date:** [September 12, 2014, 1:54pm UTC](https://forums.unrealengine.com/t/ue4-will-not-login-to-authenticate-and-program-crashing/293400/4 "2014-09-12T13:54:23Z")
It would be appreciated if someone would respond, I am now getting behind on my project… ---
**Author:** ![TJ\_V](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/tj_v/32/1008648_2.png) [@TJ\_V](https://forums.unrealengine.com/u/TJ_V)\ **Post date:** [September 12, 2014, 2:10pm UTC](https://forums.unrealengine.com/t/ue4-will-not-login-to-authenticate-and-program-crashing/293400/5 "2014-09-12T14:10:37Z")
HI ajbombadil, Could you try the Troubleshooting steps for the Fails to Load/Crash section in the link below? If nothing works for you, follow the steps at the bottom on the page and post your Verbose Logs. They will help us track down the issue. > **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)** > > After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — https://unrealcommunity.wiki/! You will be able to find content from... ---
**Author:** ![ajbombadill](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/ajbombadill/32/625126_2.png) [@ajbombadill](https://forums.unrealengine.com/u/ajbombadill)\ **Post date:** [September 13, 2014, 12:37am UTC](https://forums.unrealengine.com/t/ue4-will-not-login-to-authenticate-and-program-crashing/293400/6 "2014-09-13T00:37:37Z")
Hello and thank you for your reply. I have tried all suggestions in link and still crashing at startup and not authenticating. I have attached my last logfile.link text The windows error report: link text ---
**Author:** ![TJ\_V](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/tj_v/32/1008648_2.png) [@TJ\_V](https://forums.unrealengine.com/u/TJ_V)\ **Post date:** [September 15, 2014, 1:29pm UTC](https://forums.unrealengine.com/t/ue4-will-not-login-to-authenticate-and-program-crashing/293400/7 "2014-09-15T13:29:57Z")
Thank you for the DMP and error files. We also need your Verbose Logs. The link in my previous post has directions on how to find them. ---
**Author:** ![ajbombadill](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/ajbombadill/32/625126_2.png) [@ajbombadill](https://forums.unrealengine.com/u/ajbombadill)\ **Post date:** [September 15, 2014, 5:48pm UTC](https://forums.unrealengine.com/t/ue4-will-not-login-to-authenticate-and-program-crashing/293400/8 "2014-09-15T17:48:54Z")
Hello, sorry about that here it is.link text ---
**Author:** ![leighswift](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@leighswift](https://forums.unrealengine.com/u/leighswift)\ **Post date:** [September 16, 2014, 11:46pm UTC](https://forums.unrealengine.com/t/ue4-will-not-login-to-authenticate-and-program-crashing/293400/9 "2014-09-16T23:46:20Z")
Hi ajbombadill, I think maybe your content cache has gotten corrupt. The crash occurs when trying to display an image file that is loaded from the drive. Could you try rename the image content cache folder in order to test this theory? You’ll find it here:-\<\br\> `C:\ProgramData\Epic\UnrealEngineLauncher\Data\ContentCache` If that works fine you are safe to the delete the renamed folder. Let me know if that helps! Thanks, Leigh ---
**Author:** ![ajbombadill](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/ajbombadill/32/625126_2.png) [@ajbombadill](https://forums.unrealengine.com/u/ajbombadill)\ **Post date:** [September 17, 2014, 2:15am UTC](https://forums.unrealengine.com/t/ue4-will-not-login-to-authenticate-and-program-crashing/293400/10 "2014-09-17T02:15:03Z")
Hello, thank you that seems to have corrected the crashing on loading. I am now just having troubles loading some of the levels in my project, but will try them all then let you know if it is a level based crash or the entire project. ---
**Author:** ![ajbombadill](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/ajbombadill/32/625126_2.png) [@ajbombadill](https://forums.unrealengine.com/u/ajbombadill)\ **Post date:** [September 17, 2014, 2:22am UTC](https://forums.unrealengine.com/t/ue4-will-not-login-to-authenticate-and-program-crashing/293400/11 "2014-09-17T02:22:56Z")
Hello, thank you, that seems to have corrected the crashing on loading. I am now just having troubles loading one of the levels in my project, I have attached the callstack report for the crash. link text ---
**Author:** ![ajbombadill](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/ajbombadill/32/625126_2.png) [@ajbombadill](https://forums.unrealengine.com/u/ajbombadill)\ **Post date:** [September 17, 2014, 4:12am UTC](https://forums.unrealengine.com/t/ue4-will-not-login-to-authenticate-and-program-crashing/293400/12 "2014-09-17T04:12:40Z")
Hello again, I have corrected the problem, the one level map was damaged, I replaced it with a backup copy and the level is working fine now. Thanks for all your help Leigh, as well as the initial help from TJ, it is greatly appreciated, now back to my project!