# Visual Studio Error: Ue4Editor-\[classname\]-(random number).dll is missing **URL:** \ **Category:** Pipeline & Plugins\ **Tags:** unreal-engine, dll-missing, bug-report, Visual-Studio, UE4, CPP, question\ **Created:** [April 22, 2018, 8:04pm UTC](https://forums.unrealengine.com/t/visual-studio-error-ue4editor-classname-random-number-dll-is-missing/423315 "2018-04-22T20:04:48Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![anonymous\_user\_55f51d2d](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_55f51d2d](https://forums.unrealengine.com/u/anonymous_user_55f51d2d)\ **Post date:** [April 22, 2018, 8:04pm UTC](https://forums.unrealengine.com/t/visual-studio-error-ue4editor-classname-random-number-dll-is-missing/423315/1 "2018-04-22T20:04:48Z")
This problem has occurred in all my unreal engine projects in the past few days. It seems to occur after I add a c++ class and build. After I close the editor and visual studio, reopening the editor results in a missing dll error and a request to rebuild. Rebuilding does not work. Opening the project in visual studio and trying to build results in the error above. I have tried the following: - deleting the intermediate, saved, vs, and binaries folders and generating project files. - repairing the Unreal engine installation - changing the engine version - rebuilding the Visual studio code - editing the uproject file - editing the Target.cs files This issue has been a serious roadblock. I would really appreciate some help. ---
**Author:** ![dmzl](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@dmzl](https://forums.unrealengine.com/u/dmzl)\ **Post date:** [June 26, 2019, 1:51pm UTC](https://forums.unrealengine.com/t/visual-studio-error-ue4editor-classname-random-number-dll-is-missing/423315/2 "2019-06-26T13:51:02Z")
Same problem here. Trying to understand why