MongoDB Crashes || Version 7.0 || Windows 2019

Hello Team, Our MongoDB services where crashed and the log shows below . I tried to find answer on different articles . most of member are suggested to disable or skip antivirus on db folders and set Unicode utf-8 which is already passed these chakes. antivirus software not scanned showing no report on that day. so what could be the reason behind the crash. Could you please help me ?

{“t”:{“$date”:"2024-12-25T09:54:24 “ctx”:“ftdc”,“msg”:“Writing fatal message”,“attr”:{“message”:“DBException::toString(): FileRenameFailed: Access is denied\nActual exception type: class mongo::error_details::ExceptionForImpl<37,class mongo::AssertionException>\n\n”}}

I have gone through below post but clue getting.

Hi, it seems you have some file permission issue. Make sure mongod user has full access to the mongo directory and subdirectories.

Hello @Ivan_Groenewold , I appreciate your response . MongoDB services running through local account only. i can start and stop DB services .still do need to review ? I belive local account have all privileges

It is possible some other processing is changing the ownership of files? I am sorry but we don’t support Windows at all. I suggest you consider running our mongoDB distribution in Linux instead.

Thank for you suggestions and help @Ivan_Groenewold .

I am still not able to find the root. cause. thinking to have dedicate server for MongoDB and use dedicate user to run mongoDB as windows service.

Hello @amulla
As Ivan said the error message is about file permissions.
Also that error message provides context: FTDC.
In MongoDB FTDC subsystem creates files in the diagnostic.data directory which is located under the instance’s dbPath.
By default, if you installed MongoDB with the default settings, the dbPath is typically C:\Program Files\MongoDB\Server\<version>\data. Therefore, the FTDC data would be in C:\Program Files\MongoDB\Server\<version>\data\diagnostic.data.
Make sure your local account user is able to create files in that directory.

@Igor_Solodovnikov , Actually DB was running fine from long time how can suddenly permission can changed for local account. and due to which database crashed.