# Product Activation Error E40-0

**URL:** <https://forums.unrealengine.com/t/product-activation-error-e40-0/311495>\
**Category:** Getting Started & Setup\
**Tags:** content-examples, unreal-engine, UE4, question\
**Created:** [March 18, 2015, 6:25am UTC](https://forums.unrealengine.com/t/product-activation-error-e40-0/311495 "2015-03-18T06:25:47Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![geekyhawkes\_1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@geekyhawkes\_1](https://forums.unrealengine.com/u/geekyhawkes_1)\
**Post date:** [March 18, 2015, 6:25am UTC](https://forums.unrealengine.com/t/product-activation-error-e40-0/311495/1 "2015-03-18T06:25:47Z")

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Hello;

I have been using Unreal Engine for a while on Windows with no issues, today I tried to download the content examples pack (after an upgrade to 4.7.3) and it keeps failing.

I have restarted the engine and PC but always get the Product Activation Error E40-0.

How can I fix this?

Thanks;

Andy

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**Author:** ![frankmli](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@frankmli](https://forums.unrealengine.com/u/frankmli)\
**Post date:** [March 18, 2015, 6:37am UTC](https://forums.unrealengine.com/t/product-activation-error-e40-0/311495/2 "2015-03-18T06:37:31Z")

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Same here.

 ![34698-ue4+activation+failed.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/d/a/5/da5f7ee4c45a5fd5cc92b1459f5bb92c480f00f4.jpeg)

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**Author:** ![master\_rigel](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@master\_rigel](https://forums.unrealengine.com/u/master_rigel)\
**Post date:** [March 18, 2015, 7:00am UTC](https://forums.unrealengine.com/t/product-activation-error-e40-0/311495/3 "2015-03-18T07:00:44Z")

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I have the same problem with UE4 4.7.2 on the launcher.

launcher version 2.0.1.2467307

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<div class="post-metadata">

**Author:** ![geekyhawkes\_1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@geekyhawkes\_1](https://forums.unrealengine.com/u/geekyhawkes_1)\
**Post date:** [March 18, 2015, 7:23am UTC](https://forums.unrealengine.com/t/product-activation-error-e40-0/311495/4 "2015-03-18T07:23:42Z")

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Mine is now working - Nothing changed on my system so maybe Unreal just catching up after the engine update their end?

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<div class="post-metadata">

**Author:** ![frankmli](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@frankmli](https://forums.unrealengine.com/u/frankmli)\
**Post date:** [March 18, 2015, 8:44am UTC](https://forums.unrealengine.com/t/product-activation-error-e40-0/311495/5 "2015-03-18T08:44:03Z")

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It works for me here as well. Thanks.

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**Author:** ![R0OT7](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@R0OT7](https://forums.unrealengine.com/u/R0OT7)\
**Post date:** [September 23, 2018, 12:41am UTC](https://forums.unrealengine.com/t/product-activation-error-e40-0/311495/6 "2018-09-23T00:41:55Z")

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Have you found a solution?