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Personal gateway - InvalidCredentialFormat - Signature does not match

I have a dataset which uses the personal gateway to publish data. I have used it succesfully for more than 3 months.


Last succesfull data refresh was 29/3. When I tried to refresh the data 2/4 it says in the error message that the gateway is not online. Even though it is.




I have tried to uninstall and reinstall the data gaway (march 2018 version).


The gateway logs report an error, that I don't know what to do with (see below).


Any suggestions would be appreciated.



GatewayPipelineErrorCode=DM_GWPipeline_Gateway_SignatureNotMatchCredentialError --->
Inner exception chain: System.FormatException
<pi>System.FormatException: InvalidCredentialFormat - Signature does not match
ved Microsoft.PowerBI.DataMovement.CommonUtilities.SymmetricKeyEncryptionHelper.Decrypt(SymmetricKeyEncryptedResultDataContract encryptedData, SymmetricKeyContractBase key)
ved Microsoft.PowerBI.DataMovement.Pipeline.GatewayDataAccess.CredentialUtils.DecryptSymmetricKey(SymmetricKeyEncryptedResultDataContract encryptedData, SymmetricKeyContractBase key)</pi>
--- End of inner exception stack trace ---
ved Microsoft.PowerBI.DataMovement.Pipeline.GatewayDataAccess.CredentialUtils.DecryptSymmetricKey(SymmetricKeyEncryptedResultDataContract encryptedData, SymmetricKeyContractBase key)
ved Microsoft.PowerBI.DataMovement.Pipeline.GatewayDataAccess.CredentialUtils.DecryptCredential(CredentialDetails credentialDetails, IGatewayCredentialStore credentialStore)
ved Microsoft.PowerBI.DataMovement.Pipeline.GatewayDataAccess.DbConnectionProviderBase.DecryptCredential(CredentialDetails credentialDetails)
ved Microsoft.PowerBI.DataMovement.Pipeline.GatewayDataAccess.MashupConnectionProviderBase.PrePrepareMashupCredential(DataSourceGatewayDetails datasource, String dataSourceKind)
ved Microsoft.PowerBI.DataMovement.Pipeline.GatewayDataAccess.MashupOleDbConnectionProvider.<PrepareMashupCredential>d__5.MoveNext()



What is your data source? Currently, you will experience refresh failures getting a personal gateway error if you refresh cloud data source using function. You can check the notification in Power BI support site.



Community Support Team _ Lydia Zhang
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Hi Lydia


Thanks for responding. I am using a mix of:


a) on-premise SQL server,

b) xlxs and txt files on local sharepoint,

c) xlxs files on O365 OneDrive


I am not sure which of these qualifies as a cloud data source', but I guess the latter could be.


Are you able to use on-premises gateway rather than personal gateway to refresh the dataset? You can follow the guide in the blog below to add data sources within gateway.


Community Support Team _ Lydia Zhang
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

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