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Tabor LawsTabor Laws 

I have several Crystal Reports that run off of a Salesforce connection. These have been in place for over a year and have just stopped working. I'm linked via www.salesforce.com/services/Soap/u/17.0 and I've just started getting the error Logon failed.

Best Answer chosen by Tabor Laws
SandhyaSandhya (Salesforce Developers) 
Hi,

General troubleshooting steps to resolve Salesforce.com connectivity issue?
   
Verify if the Salesforce.com user name and password are correct by login to the Salesforce.com website at: https://login.salesforce.com
       
Verify with your Salesforce.com Administrator, if your computer is within the Salesforce.com Trusted IP Range?
For information on how to add your computer to the Salesforce.com Trusted IP Range, see the SAP Knowledge Base 1294023
     
If your computer is not within the Salesforce.com Trusted IP Range, then ensure you are using the Salesforce.com Security Token?
For information on how to obtain and use the Salesforce.com Security Token to connect using external application, see the SAP Knowledge Base 2247103 
            
Confirm with your Network Administrator, if your company network uses Proxy. If it does, then add the proxy information to the Salesforce.com driver, by following the information found in the SAP Knowledge Base 1294512
      
Also refer below links.

https://apps.support.sap.com/sap/support/knowledge/public/en/2394761
 
https://apps.support.sap.com/sap/support/knowledge/public/en/2245135
 
Please mark it as solved if my reply was helpful. It will make it available for other as the proper solution.
 
Best Regards
Sandhya
 

All Answers

SandhyaSandhya (Salesforce Developers) 
Hi,

General troubleshooting steps to resolve Salesforce.com connectivity issue?
   
Verify if the Salesforce.com user name and password are correct by login to the Salesforce.com website at: https://login.salesforce.com
       
Verify with your Salesforce.com Administrator, if your computer is within the Salesforce.com Trusted IP Range?
For information on how to add your computer to the Salesforce.com Trusted IP Range, see the SAP Knowledge Base 1294023
     
If your computer is not within the Salesforce.com Trusted IP Range, then ensure you are using the Salesforce.com Security Token?
For information on how to obtain and use the Salesforce.com Security Token to connect using external application, see the SAP Knowledge Base 2247103 
            
Confirm with your Network Administrator, if your company network uses Proxy. If it does, then add the proxy information to the Salesforce.com driver, by following the information found in the SAP Knowledge Base 1294512
      
Also refer below links.

https://apps.support.sap.com/sap/support/knowledge/public/en/2394761
 
https://apps.support.sap.com/sap/support/knowledge/public/en/2245135
 
Please mark it as solved if my reply was helpful. It will make it available for other as the proper solution.
 
Best Regards
Sandhya
 
This was selected as the best answer
Tabor LawsTabor Laws
Unbeknownst to me, our public IP address had changed.  Added it into Salesforce and our reports now work.