Tuesday 6 October 2020

Old Access DB file corrupts over SMB for no obvious reason

 If you find your self looking at an Access database issue where it reports its corrupted randomly when it accessed over a network share.

It may be related to SMB2, if the DB was fine under SMB1 then its possibly related to one of the following settings

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters]
"FileInfoCacheLifetime"=dword:00000000
"FileNotFoundCacheLifetime"=dword:00000000
"DirectoryCacheLifetime"=dword:00000000

You will need to change this on all the clients that access the DB over SMB which can be done via GPO.

https://docs.microsoft.com/en-us/windows-server/administration/performance-tuning/role/file-server/

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