# Maps (.umap) are not appearing in Content Browser

**URL:** <https://forums.unrealengine.com/t/maps-umap-are-not-appearing-in-content-browser/457805>\
**Category:** World Creation\
**Tags:** content-browser, umap, unreal-engine, question\
**Created:** [October 31, 2019, 12:34am UTC](https://forums.unrealengine.com/t/maps-umap-are-not-appearing-in-content-browser/457805 "2019-10-31T00:34:26Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![anonymous\_user\_f2498077](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_f2498077](https://forums.unrealengine.com/u/anonymous_user_f2498077)\
**Post date:** [October 31, 2019, 12:34am UTC](https://forums.unrealengine.com/t/maps-umap-are-not-appearing-in-content-browser/457805/1 "2019-10-31T00:34:26Z")

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Today when I opened UE some of my maps have seemingly disappeared from the content browser, despite no changes occurring. I’ve read through a dozen other questions on the answers hub of people reporting the same issue, and in all of those cases suggestions are given which are not applicable here:

- I have not modified my version of unreal. This project was started in 4.22 and is still in 4.22.
- No file changes have occurred. I’m using source control, and there have been no changes in my working project since the maps loaded correctly yesterday.
- I have tried various versions of my project from over the past week, and they all now exhibit the problem despite working fine when I made them.

Whatever the problem here is, it must be related to some cached data inside the Editor, not my project. The Editor **must** be finding the .umap asset on disk, and then making some type of decision to _not_ show that map inside the content browser. Whatever that logic is needs to be exposed to the user so that they can resolve the issue.

I would happily debug the engine source for this if anyone could point me in the direction of where in the source it does this check.

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**Author:** ![BlueMind\_Studio](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@BlueMind\_Studio](https://forums.unrealengine.com/u/BlueMind_Studio)\
**Post date:** [October 31, 2019, 2:06pm UTC](https://forums.unrealengine.com/t/maps-umap-are-not-appearing-in-content-browser/457805/2 "2019-10-31T14:06:51Z")

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try to copy them into a new blank project to be sure. if you have 4.23 installed, try also in that one. open the map in a editor (or hex-editor) - keep in mind how big the file is it may crash your editor (depending on your editor), search for “++UE4+Release-” and have a look what it sais after that pattern. I guess you already checked the logs under the Save\Logs folder if the editor complains for something?