# Installation error - AR-File can not be read

**URL:** <https://community.br-automation.com/t/installation-error-ar-file-can-not-be-read/4214>\
**Category:** How-To & Wikis\
**Tags:** automation-runtime\
**Created:** [August 30, 2024, 7:19am UTC](https://community.br-automation.com/t/installation-error-ar-file-can-not-be-read/4214 "2024-08-30T07:19:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![FIH-RSB](https://dub1.discourse-cdn.com/brcommunity/user_avatar/community.br-automation.com/fih-rsb/32/410_2.png) [@FIH-RSB](https://community.br-automation.com/u/FIH-RSB)\
**Post date:** [August 30, 2024, 7:19am UTC](https://community.br-automation.com/t/installation-error-ar-file-can-not-be-read/4214/1 "2024-08-30T07:19:55Z")

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Sporadically, the error that the Automation Runtime file cannot be read appears during download or offline installation, causing the installation to be cancelled.

 ![image](https://europe1.discourse-cdn.com/brcommunity/original/2X/2/25f3dad1da9327d46295ef3a961a4e675f127485.png)

To solve this problem, proceed as follows.

1. Switch to an older AR version in the project
2. Reinstall the desired AR version via [Tools-\>Upgrades].  
Set the filter to and select the Checkbox [Show upgrades alreday installed]
3. Switch back to the desired AR version
4. Restart the installation

With this procedure, the error can be rectified and the project can be reloaded with the desired AR version.

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**Author:** ![krausertm](https://dub1.discourse-cdn.com/brcommunity/user_avatar/community.br-automation.com/krausertm/32/98_2.png) [@krausertm](https://community.br-automation.com/u/krausertm)\
**Post date:** [September 17, 2024, 12:41pm UTC](https://community.br-automation.com/t/installation-error-ar-file-can-not-be-read/4214/2 "2024-09-17T12:41:48Z")

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I just had the exact same issue with AS4.12, APC3100 and AR J4.93.  
Restarting Automation Studio solved the issue for me!

Update: Just had the same issue again after fiddling around with git. (Did some checkouts and merges)

Best regards!

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**Author:** ![kovarj](https://dub1.discourse-cdn.com/brcommunity/user_avatar/community.br-automation.com/kovarj/32/537_2.png) [@kovarj](https://community.br-automation.com/u/kovarj)\
**Post date:** [September 17, 2024, 3:32pm UTC](https://community.br-automation.com/t/installation-error-ar-file-can-not-be-read/4214/3 "2024-09-17T15:32:42Z")

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cool,thanks for that 🙂