How to fix "The remote server returned an error: (404) Not Found." in PowerShell when Connected to MicrosoftTeams and Requestion Application Access Policies

Question

How to fix "The remote server returned an error: (404) Not Found." in PowerShell when Connected to MicrosoftTeams and Requestion Application Access Policies

William Oquendo 5

QUESTION: What do I need to do in order to GET and UPDATE my Application Access Policies. I need the ability to update a Global Access Policy to include the APP ID of my newly created Microsoft Graph APP Registration.

ISSUE: I see the following error when I am connected to Microsoft Teams and try to request my Application Access Policies:

PS C:\WINDOWS\system32> Get-CsApplicationAccessPolicy
Get-CsApplicationAccessPolicy : The remote server returned an error: (404) Not Found.
At line:1 char:1
+ Get-CsApplicationAccessPolicy
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Get-CsApplicationAccessPolicy], WebException
    + FullyQualifiedErrorId : System.Net.WebException,Microsoft.Teams.ConfigApi.Cmdlets.GetCsApplicationAccessPolicy

Details:

Here's some details for what I have done prior to seeing this error above.

I recently created a new "free" Microsoft Azure Admin Account.
In Azure Admin Portal, I created a new APP Registration for MS Graph and granted the API Permissions below
In Windows PowerShell, I ran the command below to connect to Microsoft Teams. When connected I see the Tenant ID that is associated with my "free" Azure Admin Account.

Connect-MicrosoftTeams

Now Connected, I attempted to retrieve any existing application access policies. (I also tried to create a new access policy, but see the same result).

Get-CsApplicationAccessPolicy

Once the above command is input I see the following error

Get-CsApplicationAccessPolicy : The remote server returned an error: (404) Not Found. At line:1 char:1 + Get-CsApplicationAccessPolicy + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~     + CategoryInfo          : NotSpecified: (:) [Get-CsApplicationAccessPolicy], WebException     + FullyQualifiedErrorId : System.Net.WebException,Microsoft.Teams.ConfigApi.Cmdlets.GetCsApplicationAccessPolicy

Rich Matheisen 47,901 Reputation points

2023-08-19T02:05:03.62+00:00

Try adding the "-Verbose" switch to the cmdlets parameters. It may provide more information.

William Oquendo 5

Hi,

I have confirmed the following:

I am running Windows PowerShell 5.1
.NET Framework is on version 4.8+

I tried running the command again with -Verbose and I see the output below when I try to request available access policies.

PowerShell Command

PS C:\WINDOWS\system32> Get-CsApplicationAccessPolicy -Verbose|

Response:

VERBOSE: EnabledForFlight: False, AutoRestCommandInfo: False
Get-CsApplicationAccessPolicy : The remote server returned an error: (404) Not Found.
At line:1 char:1
+ Get-CsApplicationAccessPolicy -Verbose
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Get-CsApplicationAccessPolicy], WebException
    + FullyQualifiedErrorId : System.Net.WebException,Microsoft.Teams.ConfigApi.Cmdlets.GetCsApplicationAccessPolicy

1 answer

Your answer

Rich Matheisen 47,901 Reputation points

2023-08-19T02:05:03.62+00:00

Try adding the "-Verbose" switch to the cmdlets parameters. It may provide more information.
William Oquendo 5 Reputation points

2023-08-21T13:37:30.04+00:00

Hi,

I have confirmed the following:

I am running Windows PowerShell 5.1

.NET Framework is on version 4.8+

I tried running the command again with -Verbose and I see the output below when I try to request available access policies.

PowerShell Command

PS C:\WINDOWS\system32> Get-CsApplicationAccessPolicy -Verbose|

Response:

VERBOSE: EnabledForFlight: False, AutoRestCommandInfo: False Get-CsApplicationAccessPolicy : The remote server returned an error: (404) Not Found. At line:1 char:1 + Get-CsApplicationAccessPolicy -Verbose + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [Get-CsApplicationAccessPolicy], WebException + FullyQualifiedErrorId : System.Net.WebException,Microsoft.Teams.ConfigApi.Cmdlets.GetCsApplicationAccessPolicy

Answer 1

msft-gu 1,355

Hi William Oquendo,

Good day and thank you for your question. I replicated this on my end, but I haven't encountered an issue.

User's image

Please make sure that you have the prerequisites first:

Windows PowerShell 5.1
.NET Framework 4.7.2

To add, I also tested this on a Global Administrator account and a Teams Administrator account.

Please let me know if you're still encountering an issue after checking the information above.

If I answered your question, please upvote and accept it as an answer. Have a great day ahead!

William Oquendo 5

Hi,

I have confirmed the following:

I am running Windows PowerShell 5.1
.NET Framework is on version 4.8+

I tried running the command again with -Verbose and I see the output below when I try to request available access policies.

PowerShell Command

PS C:\WINDOWS\system32> Get-CsApplicationAccessPolicy -Verbose|

Response:

VERBOSE: EnabledForFlight: False, AutoRestCommandInfo: False
Get-CsApplicationAccessPolicy : The remote server returned an error: (404) Not Found.
At line:1 char:1
+ Get-CsApplicationAccessPolicy -Verbose
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Get-CsApplicationAccessPolicy], WebException
    + FullyQualifiedErrorId : System.Net.WebException,Microsoft.Teams.ConfigApi.Cmdlets.GetCsApplicationAccessPolicy

msft-gu 1,355 Reputation points

2023-09-06T14:09:43.0466667+00:00

I reproduced this again on my test environment but I cannot replicate the issue. Do you have any network restriction or configuration such as Firewall, VPN/Proxy or Antivirus?
Marion 0 Reputation points

2024-02-01T08:57:26.28+00:00

Hello William,

Do you manage to solve your problem ?
Because I have exactly the same.
I have to create an application policy access to allow my application to create teams meeeting and I am facing the same problems.
William Oquendo 5 Reputation points

2024-02-01T14:13:37.8633333+00:00

Hi Marion, I was able to resolve my issue, though I didn't make a note of the exact steps I took. Here's what I remember that might be of assistance! I think my solution involved visiting admin.microsoft.com to buy a Microsoft 365 subscription. I believe setting up Groups was also necessary to make sure the licenses were correctly assigned to my account.
Ash Chowdhury 5 Reputation points

2024-02-27T03:23:30.1733333+00:00

@William Oquendo Thanks a lot mate. I was having the same issue in my test tenant and after reading your comment I had a look and found out that my trial licence expired!

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How to fix "The remote server returned an error: (404) Not Found." in PowerShell when Connected to MicrosoftTeams and Requestion Application Access Policies

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