Writefile return access denied?

Question

0.00/5 (No votes)

See more:

WriteFile return access denied?

while i providing admin privileges

please help me for this.

C++

HANDLE hCD = CreateFile (file_Name, GENERIC_READ|GENERIC_WRITE,
						 FILE_SHARE_READ|FILE_SHARE_WRITE,
						 NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,
						 NULL);

WriteFile (hCD, Buffer, Size, &bytesWritten, NULL);

its fails with access denied.

thanks in advance.

What I have tried:

WriteFile return access denied?

while i providing admin privileges

please help me for this.

C++

HANDLE hCD = CreateFile (file_Name, GENERIC_READ|GENERIC_WRITE,
						 FILE_SHARE_READ|FILE_SHARE_WRITE,
						 NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,
						 NULL);

WriteFile (hCD, Buffer, Size, &bytesWritten, NULL);

its fails with access denied.

thanks in advance.

Posted 20-Dec-21 21:33pm

Le@rner

Updated 20-Dec-21 21:59pm

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Answer 1 · 2021-12-20T21:58:00

Start by checking that the file and the whole path it describes exists, and that the necessary access permissions apply to the whole path. if this is a network share, you will need to ensure that write access for the connection user is available as well.

Then check the app user: depending on how your app runs, it may not be the same user you would normally apply. For example, a Service does not run under a standard user account and can't access user data unless specifically permitted to.

If all of that looks right, then start looking to see if the file is already open - is there an exclusive lock on the file elsewhere in your app that hasn't been closed, or is some other app accessing the file at the same time? Does this occur every time, or the second time you do something, or ... you know the drill.

Sorry, but we can't help you - this requires access to your system that we just don't have; a tiny fragment of code is nowhere near enough!

Richard MacCutchan · Answer 2 · 2021-12-20T21:59:00

Solution 2

You already posted this question at WriteFile return access denied? - C / C++ / MFC Discussion Boards[^]. And you have been a CodeProject member long enough to know that you should not repost the same questions.

Posted 20-Dec-21 21:59pm

Richard MacCutchan