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Error: "Bad Request" When Logging In With REST API Using A Password tha Contains Ampersand

Publish Date: Aug 25, 2025
Description
When using REST API to login in to Tableau Server, the following error might occur if the password contains an ampersand (&): 
Bad Request

Cause

Depending on the program being used to test the REST API, the & symbol can be interpreted as HTML.
 

 

Resolution
Add the following "&" to replace the ampersand in the password. 

For example:
  • Instead of "Pass&word"
  • Use "Pass&word"
Additional Resources
According to the following link, the issue may occur for other characters. For more information about such best practices, see Escaping XML Data.
Knowledge Article Number

001498375

 
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Salesforce Help | Article