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Visual Studio Code - AL - Cannot download Symbol - On Premise

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Posted on by Hoang Ng

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I tried connect Visual Studio Code to my ERP hosted on my server. It was not successful when I download the Symbol

Error:

Authorization has failed or the credentials have expired. The credential cache has been cleaned. Any access to reach Business Central would require new authorization."

I can access the URL of dev port:

I cleared the cache, but it did not solve

Where did I configure wrong ?

Thanks.

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YUN ZHU 98,821 Super User 2026 Season 1 on at

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Hi, Some settings are required when linking On-Pre environments. Please check the following.

And most importantly, the port below is not a client port, but a development port.

Hope this helps.

Thanks.

ZHU

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Hoang Ng 307 on at

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Thanks Yun

I already checked the Developer mode

Could you please advise more place to check

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YUN ZHU 98,821 Super User 2026 Season 1 on at

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Below is my example, hopefully it will give you some hints.

BC:

launch.json: I used windows authentication

Thanks.

ZHU

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Hoang Ng 307 on at

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Thanks YUN,

I could not solve the error although I install Visual Studio Code in Server which hosts the ERP. The error is still

{

"version": "0.2.0",

"configurations": [

{

"name": "Your own server",

"request": "launch",

"type": "al",

"environmentType": "OnPrem",

"server": "http://localhost:80/PROD",

"serverInstance": "PROD",

"authentication": "UserPassword",

"tenant": "default",

"startupObjectId": 22,

"startupObjectType": "Page",

"breakOnError": true,

"launchBrowser": true,

"enableLongRunningSqlStatements": true,

"enableSqlInformationDebugger": true

}

]

}

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Marco Mels Microsoft Employee on at

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Hello,

yzhums uses Windows authentication while you are using UserPassword for the authentication. UserPassword requires NavUserPassword for the NST authentication and probably also SSL cert.

I would bet that this causing the issue.

Thank you.

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