# Upgrading to HTTP/2 Error(InvalidVersion)

**URL:** <https://discuss.dwolla.com/t/upgrading-to-http-2-error-invalidversion/9980>\
**Category:** General\
**Created:** [October 24, 2024, 2:36am UTC](https://discuss.dwolla.com/t/upgrading-to-http-2-error-invalidversion/9980 "2024-10-24T02:36:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![key\_yang](https://avatars.discourse-cdn.com/v4/letter/k/f08c70/32.png) [@key\_yang](https://discuss.dwolla.com/u/key_yang)\
**Post date:** [October 24, 2024, 2:36am UTC](https://discuss.dwolla.com/t/upgrading-to-http-2-error-invalidversion/9980/1 "2024-10-24T02:36:00Z")

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![image](https://global.discourse-cdn.com/dwolla/original/2X/4/4eb9da492de6c9e85d06c2013a5a10dce597a112.png)

Both HttpRequest and HttpResponse Header convert to lowercase letters.I get invalid version error.

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**Author:** ![spencer](https://sea2.discourse-cdn.com/dwolla/user_avatar/discuss.dwolla.com/spencer/32/2143_2.png) [@spencer](https://discuss.dwolla.com/u/spencer)\
**Post date:** [October 24, 2024, 1:40pm UTC](https://discuss.dwolla.com/t/upgrading-to-http-2-error-invalidversion/9980/2 "2024-10-24T13:40:06Z")

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@key_yang , The error message you highlighted doesn’t appear to be a Dwolla error message. Do you have the Dwolla error response for the request you are attempting to make? Otherwise, we may need more details on your API request in order to debug further. (language, REST client you’re using, request URL, body, etc.)

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**Author:** ![system](https://global.discourse-cdn.com/dwolla/original/2X/1/1b70808226fb9abeaaf7386224caffb453efb690.png) [@system](https://discuss.dwolla.com/u/system)\
**Post date:** [October 24, 2025, 2:36am UTC](https://discuss.dwolla.com/t/upgrading-to-http-2-error-invalidversion/9980/5 "2025-10-24T02:36:14Z")

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