RE: Microsoft Dynamics Navision CU29 won't start
Issue Solved
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Below Solution
Please try the below mitigation steps:
1. Do an online repair of the Office 365, as this will correct the security setting of these DLL after the update was done.
2. Doing manually changes to the security settings seems to work as well, but will be reverted after some time as were notified.
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\App Paths\excel.exe in regedit and add value to the (Default) key with C:\Program Files (x86)\Microsoft Office\root\Office16\Excel.exe.
We do have updated the blog (99+) Windows Client crashes with System.NullReferenceException after Windows Update - Dynamics 365 Business Central Forum Community Forum for the same.
NOTE: PG will only fix NAV 2018 and BC 14.x. Platform hotfix is contained in the upcoming May CUs (ETA 6th May).
All other versions that are out of support or out of mainstream support will not have any out of band hotfix.
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community.dynamics.com/.../dynamics-nav-crash-start-sunddenly-in-all-user-pc-windows-10