Connect-Exchange Online (Error while sending the request)

Question

Connect-Exchange Online (Error while sending the request)

AW13-2828 10

Hello,

I'm getting the below Error while connecting to Exchange Online (PowerShell Script) when called from .Net Application.

        #Import-Module ExchangeOnlineManagement
        #Connect-ExchangeOnline -Credential $Creds

An error occurred while sending the request.
At C:\Program 
Files\WindowsPowerShell\Modules\ExchangeOnlineManagement\3.4.0\netFramework\ExchangeOnlineManagement.psm1:762 char:21
+                     throw $_.Exception.InnerException;
+                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : OperationStopped: (:) [], HttpRequestException
    + FullyQualifiedErrorId : An error occurred while sending the request.

I've checked the Credentials. Updated the Exchange Online Module. Checked .Net Framework and its Compatible.

I'm using Windows PowerShell 5.1.

Policy is been set to Bypass.

Thanks & Regards

Anonymous

2023-11-21T02:29:13.3833333+00:00

Hello AW

Is there a problem if you connect EXO without the .net application?
Regards
Mora, Juan-Manuel 0 Reputation points

2024-02-26T16:10:27.67+00:00

Any soluttion on this issue? I have the same problem

3 answers

Your answer

Anonymous

2023-11-21T02:29:13.3833333+00:00

Hello AW

Is there a problem if you connect EXO without the .net application?
Regards
Mora, Juan-Manuel 0 Reputation points

2024-02-26T16:10:27.67+00:00

Any soluttion on this issue? I have the same problem

Answer 1

Russ S 25

I had the same issue, but was able to solve it by specifying Tls 1.2.

Add this line:

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

That should get you past that error.

Aws Ayad 0 Reputation points

2024-04-18T17:00:52.2566667+00:00

Russ - I tried adding this line but it didn't solve the problem? the error is fairly vague and doesn't say much. Any other potential fixes for this problem?

Answer 2

Mora, Juan-Manuel 0

Any steps to solve this issue?

Answer 3

Andre g 6

We tried with registry keys for TLS, with latest updates for Exchange and Windows server.

The error was fixed temporarely, but now is back in all machines behind our customer network. So I just updated the Sonicwall, but the error persists.

DB 0

I had the same issue. I run a script in PowerShell and an error appears.

WS-Trust endpoint not found in metadata document. 
At C:\Program Files\WindowsPowerShell\Modules\ExchangeOnlineManagement\3.4.0\netFramework\ExchangeOnlineManagement.psm1:762 char:21
+                     throw $_.Exception.InnerException;
+                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : OperationStopped: (:) [], MsalClientException
    + FullyQualifiedErrorId : WS-Trust endpoint not found in metadata document.

Mora, Juan-Manuel 0 Reputation points

2024-06-03T19:48:04.0966667+00:00

Try this line before connect
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
DB 0 Reputation points

2024-06-03T20:23:15.97+00:00

I have this line in the script before the Connect-ExchangeOnline command. Unfortunately the error is the same.
Andre g 6 Reputation points

2024-06-03T20:37:50.33+00:00

It was the firewall Content Filtering feature in our case, so we fixed by creating an exclusion for the internal machines doing Connect-exchangeonline. Some Microsoft servers are blacklisted in Sonicwall.
DB 0 Reputation points

2024-06-03T20:46:23.7233333+00:00

Thanks for the info. I'll try to check my OPNsense firewalls.

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Connect-Exchange Online (Error while sending the request)

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