Could not connect to the server. The operation couldn't be completed (NSURLErrorDomain error -999)

(2) Share

Report

Posted on by Premkumar0509

Unable to connect Business Central Onprem in IOS version - 18.2.1 and Application Version - 4.0.9292.

Has anyone encountered the NSURLErrorDomain error -999 in Business Central before?

Thanks in advance

Categories:

Dynamics 365 Business Central

I have the same question (0)

All responses (6)

Answers (0)

Suggested answer

Premkumar0509 28 on at

Like (0)

Report

Could not connect to the server. The operation couldn't be completed (NSURLErrorDomain error -999)

@YUN ZHU , It's working in PC, Andriod, and IOS Browser. The issue is with only IOS Business Central App

Was this reply helpful? Yes No
Suggested answer

YUN ZHU 89,830 Super User 2025 Season 2 on at

Like (0)

Report

Could not connect to the server. The operation couldn't be completed (NSURLErrorDomain error -999)

Does this problem occur when logging in on a computer?

I'm not sure if the following method still works, you can try it.

Dynamics 365 Business Central: How to access Business Central on mobile or tablet devices without Mobile App (Only use browser)

https://yzhums.com/11003/

Thanks

ZHU

Was this reply helpful? Yes No
Suggested answer

Premkumar0509 28 on at

Like (0)

Report

Could not connect to the server. The operation couldn't be completed (NSURLErrorDomain error -999)

@Khushbu Rajvi. We have not changed anything in navsettings.json,

And also tried with the removing "GlobalEndpoints" adding back by as Microsoft mentioned. Not working

Was this reply helpful? Yes No
Premkumar0509 28 on at

Like (0)

Report

Could not connect to the server. The operation couldn't be completed (NSURLErrorDomain error -999)

@KasparsSemjonovs, I have tried to restart the Services and ISS. Still unable to fix

Was this reply helpful? Yes No
KasparsSemjonovs 4,511 Super User 2025 Season 2 on at

Like (1)

Report

Could not connect to the server. The operation couldn't be completed (NSURLErrorDomain error -999)

Seems like the Service has stopped working. Check it, and maybe restart it just in case.
If there are any errors, then restart should give some error, that can be analyzed further.

Was this reply helpful? Yes No
Suggested answer

Khushbu Rajvi. 18,797 Super User 2025 Season 2 on at

Like (2)

Report

Could not connect to the server. The operation couldn't be completed (NSURLErrorDomain error -999)

I am not sure its help or not but its worth to read it: https://learn.microsoft.com/en-us/entra/identity-platform/apple-sso-plugin

https://www.dynamicsuser.net/t/on-prem-version-not-work-with-this-app-dynamics-365-business-central-ios/68144

Was this reply helpful? Yes No