401 – Unauthorized Access is denied due to invalid credentials in Sage CRM

By | April 29, 2014

Error: Generally this error occurs when we try to do any administrative changes in Sage CRM. For e.g. changing in Administration -> System -> System Behavior

Error

Reason: Administrators can see the Administration tab. However if the IIS authentication is not configured correctly the error might occur while changing any configurations. Setting Application pool identity will utilize the access rights set at application pool level and hence user can modify the details.

Solution: An IIS Administrator can fix this issue by re-configuring the IIS authentication settings. To do the administrative changes (i.e. to solve this error) just follow below mentioned steps.

  1. Open the IIS Manager.
  2. Expand listed sites to open required Sage CRM site and select Authentication Feature.
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  3. Open Anonymous Authentication to edit credentials.
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  4. Change Anonymous user identity from Specific User to Application pool identity.
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  5. Run IISRESET.It would do the changes in Security Credential of the IIS for that site. After that you can do any administrative changes in Sage CRM in the administrative mode.

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