# "Failed to open requestet file"

**URL:** <https://help.nextcloud.com/t/failed-to-open-requestet-file/149233>\
**Category:** ℹ️ Support\
**Tags:** nextcloud-office\
**Created:** [November 6, 2022, 10:29am UTC](https://help.nextcloud.com/t/failed-to-open-requestet-file/149233 "2022-11-06T10:29:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Thomas\_M](https://help.nextcloud.com/letter_avatar/thomas_m/32/5_5575768a8748004e209b776fc1b2916d.png) [@Thomas\_M](https://help.nextcloud.com/u/Thomas_M)\
**Post date:** [November 6, 2022, 10:29am UTC](https://help.nextcloud.com/t/failed-to-open-requestet-file/149233/1 "2022-11-06T10:29:38Z")

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Hello,

I try to install MS Office Integration with Nextcloud.  
My Config are:  
Windows 2016 Server  
Nextcloud 24.0.7

I follow the Instruction to install MS Online Server:

> **[Deploy Office Online Server - Office Online Server](https://learn.microsoft.com/en-us/officeonlineserver/deploy-office-online-server)**
>
> Explains how to deploy Office Online Server on-premises for use by SharePoint Server, Skype for Business Server, and Exchange Server.

It shows me the right answer when I open [https://server/hosting/discovery](https://server/hosting/discovery)

I use SSL Cert. on both Servers  
I also set the RegKey for TLS on the Server

I enter the Office server under Settings/Office online in Nextcloud. It shows me a green ok but If i select it the second time it shows: “Could not establish connection to the Office Online server.”

What I was wondering: I have not to enter any login information for the Office Server.

hope you can give mit a hint

Thanks!

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<div class="post-metadata">

**Author:** ![Thomas\_M](https://help.nextcloud.com/letter_avatar/thomas_m/32/5_5575768a8748004e209b776fc1b2916d.png) [@Thomas\_M](https://help.nextcloud.com/u/Thomas_M)\
**Post date:** [November 6, 2022, 11:06am UTC](https://help.nextcloud.com/t/failed-to-open-requestet-file/149233/2 "2022-11-06T11:06:03Z")

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okay sorry.  
Looks like a has a DNS-Misconfig.

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<div class="post-metadata">

**Author:** ![system](https://help.nextcloud.com/user_avatar/help.nextcloud.com/system/32/29333_2.png) [@system](https://help.nextcloud.com/u/system)\
**Post date:** [October 2, 2024, 8:22pm UTC](https://help.nextcloud.com/t/failed-to-open-requestet-file/149233/3 "2024-10-02T20:22:00Z")

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