"Token type is not allowed" error on sharepoint search API

[Aniket_Nade]

Aim:- To access sharepoint through REST Api

Steps taken:- 

1. Created site on sharepoint.
2. Registered site as an app using https://<<domain>>/sites/<<site name>>/_layouts/15/appregnew.aspx
3. Granted tenant scope permission using https://<<domain>>/sites/<<site name>>/_layouts/15/appinv.aspx
4. Permission xml used
5. <AppPermissionRequests AllowAppOnlyPolicy="true">
     <AppPermissionRequest Scope="http://sharepoint/content/sitecollection/web" Right="FullControl" />
   </AppPermissionRequests>

     4. Collected app identifier from  https://<<domain>>/sites/<<site name>>/_layouts/15/appprincipals.aspx

     5. Fetched access token using https://accounts.accesscontrol.windows.net/<<tenant id>>/tokens/OAuth/2/

     6. Tried to search using https://bhyve10.sharepoint.com/sites/Tech/_api/search/query?querytext='smart'

          Headers

          Content-Type:application/json;odata=verbose

          Accept:application/json;odata=verbose

          Authorization:Bearer <<access token from step 5>>

         Got below error message

          {"error":"invalid_request","error_description":"Token type is not allowed."}

[#2]

@Aniket_Nade 

Hi try this solution 

"Token type is not allowed" error on sharepoint REST API - Microsoft Q&A

[#3]

@mmachniak 

That solution does not work for me. I get the following error on the last statement:

>Connect-SPOService -Url https://$orgName-admin.sharepoint.com -Credential $userCredential set-spotenant -DisableCustomAppAuthentication $false

Connect-SPOService : A parameter cannot be found that matches parameter name 'DisableCustomAppAuthentication'.
At line:1 char:105
+ ... $userCredential set-spotenant -DisableCustomAppAuthentication $false
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [Connect-SPOService], ParameterBindingException
+ FullyQualifiedErrorId : NamedParameterNotFound,Microsoft.Online.SharePoint.PowerShell.ConnectSPOService

[#4]

@Aniket_Nade 

See if the below URL can help?

https://learn.microsoft.com/en-us/answers/questions/714147/token-type-is-not-allowed-error-on-sharep...