NAV Not Opening

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Posted on by wilson0194

Having issues opening NAV. Won't even open. Details below:

Description
Faulting Application Path: C:\Program Files (x86)\Microsoft Dynamics 365 Business Central\130\RoleTailored Client\Microsoft.Dynamics.Nav.Client.exe
Creation Time: 4/5/2022 12:29:09 PM
Problem: Stopped working
Status: Report sent

Problem signature
Problem Event Name: CLR20r3
Problem Signature 01: Microsoft.Dynamics.Nav.Client
Problem Signature 02: 13.0.27183.0
Problem Signature 03: 5c34ff5e
Problem Signature 04: Microsoft.Dynamics.Nav.Client.WinClient
Problem Signature 05: 13.0.27183.0
Problem Signature 06: 5c34fea0
Problem Signature 07: 2c
Problem Signature 08: 0
Problem Signature 09: System.NullReferenceException

Extra information about the problem
Bucket ID: 9381d5621e1621fdd2905c22374210b4 (1337670391354757300)

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Answers (1)

SteveJay 10 on at

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Same error message and proceeding your message we also get the following.

Application: Microsoft.Dynamics.Nav.Client.exe

Framework Version: v4.0.30319

Description: The process was terminated due to an unhandled exception.

Exception Info: System.NullReferenceException

at Microsoft.Dynamics.Nav.Client.WinClientExcelExportService.FindMajorVersion(Microsoft.Win32.RegistryKey)

at Microsoft.Dynamics.Nav.Client.WinClientExcelExportService.<.ctor>b__8_0(Microsoft.Win32.RegistryKey)

at Microsoft.Dynamics.Nav.Client.WinClientExcelExportService.FindRegistryKey(Microsoft.Win32.RegistryHive, System.String, System.Action`1<Microsoft.Win32.RegistryKey>)

at Microsoft.Dynamics.Nav.Client.WinClientExcelExportService.FindFirstRegistryKey(System.String, System.Action`1<Microsoft.Win32.RegistryKey>)

at Microsoft.Dynamics.Nav.Client.WinClientExcelExportService..ctor(Microsoft.Dynamics.Framework.UI.UISession)

at Microsoft.Dynamics.Nav.Client.WinClient.NavWinFormsClientSession+<>c.<AddServices>b__22_6(Microsoft.Dynamics.Framework.UI.UISession)

at Microsoft.Dynamics.Framework.UI.ClientSessionCore.AddUIService(System.Func`2<Microsoft.Dynamics.Framework.UI.UISession,Microsoft.Dynamics.Framework.UI.IUIService>)

at Microsoft.Dynamics.Nav.Client.WinClient.NavWinFormsClientSession.AddServices()

at Microsoft.Dynamics.Framework.UI.ClientSessionCore.Prepare()

at Microsoft.Dynamics.Nav.Client.WinClient.StartWinFormsClient.SetupClientSession()

at Microsoft.Dynamics.Nav.Client.WinClient.StartWinFormsClient.RunCore()

at Microsoft.Dynamics.Nav.Client.WinClient.StartWinFormsClient.Run(Boolean)

at Microsoft.Dynamics.Nav.Client.Program.Main(System.String[])

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Inge M. Bruvik 1,111 Moderator on at

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Maybe you need to try to re-install the NAV client?

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YUN ZHU 95,712 Super User 2025 Season 2 on at

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Hi, It looks like a client-side problem, you can try to repair it with the same version of the installation package.

Hope this will help.

Thanks.

ZHU

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Nitin Verma 21,708 Moderator on at

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Hi wilson0194 ,

Please try to Uninstall the product and then delete the directory from C: Driver and install it again.

Thanks.

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Nitin Verma 21,708 Moderator on at

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Please consider it C: drive.

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ThomasRz 10 on at

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Hi.

we have the same problem since this morning with one of our customers with NAV2017. It seems that after a reboot the RTC is no longer running. We have the problem on multiple Client PCs. Same error in the EventLog. Reinstalling, repairing... did not work for us. Maybe it is an Windows Update or an Office Update.

Have you found a solution for the problem?

Kind regards

Thomas

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SteveJay 10 on at

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We did an office repair and it seems to have cleared the problem. I see more specific solutions about changing registry settings but the Office Update worked as well.

This is the more targeted fix.

Excel key is missing from Registry Editor. Just add it under HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\App Paths.

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ThomasRz 10 on at

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I found a solution here: www.msdynamics.de/viewtopic.php. In our case the Office Repair Tool fixed the problem.

Thomas

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wilson0194 5 on at

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The targeted fix worked for me. I was able to resolve the issue by adding the Excel key to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\App Paths

and then setting the default key data value to the Excel.exe path.

Thanks for the help.

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Marco Mels on at

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You all seem to have nailed this one! Great job.

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