I don't have permission to delete or change this folder <a href="https://filestore.community.support.microsoft.com/api/images/a6251519-5fb8-455e-a587-5f7cf3bcee30?upload=true&fud_access=CnUIwJNXSiBwn2bLo28mzzTBIZuA1lGXHv%2BZJGTh89V9Fw%2BmXrHowd%2BXPvBKBZaeXdNQ03fRSsMWEyNxcID2tyISBZIfl3kCZ7aQLZFzChxa6ZkAOxe9mUZ%2BBtJ8ND8W5HJeb8tXxrQVDwN8jNyzV06N%2BNMZJc0HgN7qddgW1t8gjYZbbzTbpAMdfzJVsD3oagCuFPwdFILhF74CMEZcUjySpbjkJ02fxeHU2rrGX8Rppka1Q2cPfy2%2BbpUzQKvlupKw39H3WOf53qAW2g2Ed0cYCxGifVeGNYfZ5Zy816vhm8ptf6UVH7MClccGolRH71baLsBvHLetg%2FyzFdj5s4tVc5qz0f8zQUb9G48QbSrQxwPzyVcttLPh445nmp0uHfOQKv4CYhtsqwAJ1K8QyDJZD6%2BZ6vBJND0Xmy5l2cc%3D%22filestore.community.support.microsoft.com%22" rel="ugc nofollow"><img src="https://filestore.community.support.microsoft.com/api/images/a6251519-5fb8-455e-a587-5f7cf3bcee30?upload=true&fud_access=CnUIwJNXSiBwn2bLo28mzzTBIZuA1lGXHv%2BZJGTh89V9Fw%2BmXrHowd%2BXPvBKBZaeXdNQ03fRSsMWEyNxcID2tyISBZIfl3kCZ7aQLZFzChxa6ZkAOxe9mUZ%2BBtJ8ND8W5HJeb8tXxrQVDwN8jNyzV06N%2BNMZJc0HgN7qddgW1t8gjYZbbzTbpAMdfzJVsD3oagCuFPwdFILhF74CMEZcUjySpbjkJ02fxeHU2rrGX8Rppka1Q2cPfy2%2BbpUzQKvlupKw39H3WOf53qAW2g2Ed0cYCxGifVeGNYfZ5Zy816vhm8ptf6UVH7MClccGolRH71baLsBvHLetg%2FyzFdj5s4tVc5qz0f8zQUb9G48QbSrQxwPzyVcttLPh445nmp0uHfOQKv4CYhtsqwAJ1K8QyDJZD6%2BZ6vBJND0Xmy5l2cc%3D" alt="图片" /> This is the FTP permission setting for IIS.<a href="https://filestore.community.support.microsoft.com/api/images/e954691a-7ef5-4ed6-862b-0e162eb60c1d?upload=true&fud_access=CnUIwJNXSiBwn2bLo28mzzTBIZuA1lGXHv%2BZJGTh89V9Fw%2BmXrHowd%2BXPvBKBZaeXdNQ03fRSsMWEyNxcID2tyISBZIfl3kCZ7aQLZFzChxa6ZkAOxe9mUZ%2BBtJ8ND8W5HJeb8tXxrQVDwN8jNyzV06N%2BNMZJc0HgN7qddgW1t8gjYZbbzTbpAMdfzJVsD3oagCuFPwdFILhF74CMEZcUjySpbjkJ02fxeHU2rrGX8SsU2X7j8InfHg%2B9BFAIqxW%2FL4FkxpOwQHs%2FdSFkaqbHeEGIflLGPUUVJolRaOfsxpYKDvLM6nlsCsmJY7xdmedOvp4hkdMlZkbq1YvvXYGdW1WEHvMTLY9DpKsfm4sRYRtJMBKjgYY9DPesejBeYcv5KXTkReZuChvP6E0MmagW1xCiCkG5CjXvHiGN6MuBUg%3D%22filestore.community.support.microsoft.com%22" rel="ugc nofollow"><img src="https://filestore.community.support.microsoft.com/api/images/e954691a-7ef5-4ed6-862b-0e162eb60c1d?upload=true&fud_access=CnUIwJNXSiBwn2bLo28mzzTBIZuA1lGXHv%2BZJGTh89V9Fw%2BmXrHowd%2BXPvBKBZaeXdNQ03fRSsMWEyNxcID2tyISBZIfl3kCZ7aQLZFzChxa6ZkAOxe9mUZ%2BBtJ8ND8W5HJeb8tXxrQVDwN8jNyzV06N%2BNMZJc0HgN7qddgW1t8gjYZbbzTbpAMdfzJVsD3oagCuFPwdFILhF74CMEZcUjySpbjkJ02fxeHU2rrGX8SsU2X7j8InfHg%2B9BFAIqxW%2FL4FkxpOwQHs%2FdSFkaqbHeEGIflLGPUUVJolRaOfsxpYKDvLM6nlsCsmJY7xdmedOvp4hkdMlZkbq1YvvXYGdW1WEHvMTLY9DpKsfm4sRYRtJMBKjgYY9DPesejBeYcv5KXTkReZuChvP6E0MmagW1xCiCkG5CjXvHiGN6MuBUg%3D" alt="图片" /> use anonymous login <a href="https://filestore.community.support.microsoft.com/api/images/d0cd2dac-61d8-432d-b03e-00ef8dbc256b?upload=true&fud_access=CnUIwJNXSiBwn2bLo28mzzTBIZuA1lGXHv%2BZJGTh89V9Fw%2BmXrHowd%2BXPvBKBZaeXdNQ03fRSsMWEyNxcID2tyISBZIfl3kCZ7aQLZFzChxa6ZkAOxe9mUZ%2BBtJ8ND8W5HJeb8tXxrQVDwN8jNyzV06N%2BNMZJc0HgN7qddgW1t8gjYZbbzTbpAMdfzJVsD3oagCuFPwdFILhF74CMEZcUjySpbjkJ02fxeHU2rrGX8TV1lXUZKKP9tCCy%2F4Z8VHFhNnbEGpjLWWjeJBpSWoMp91rREophaBCgJYfRBg0mArEa6ufGFdOBs46EXEMzeg63k0h4DV6jxFGBhSQq3it5zhxq2muqHMp611F0ZGUqs4Y2tiE45p9noN6L7GW24RPk2N4GfUoqbtQgalg99PHdLAyucp60fLARgCEUD4Mfis%3D%22filestore.community.support.microsoft.com%22" rel="ugc nofollow"><img src="https://filestore.community.support.microsoft.com/api/images/d0cd2dac-61d8-432d-b03e-00ef8dbc256b?upload=true&fud_access=CnUIwJNXSiBwn2bLo28mzzTBIZuA1lGXHv%2BZJGTh89V9Fw%2BmXrHowd%2BXPvBKBZaeXdNQ03fRSsMWEyNxcID2tyISBZIfl3kCZ7aQLZFzChxa6ZkAOxe9mUZ%2BBtJ8ND8W5HJeb8tXxrQVDwN8jNyzV06N%2BNMZJc0HgN7qddgW1t8gjYZbbzTbpAMdfzJVsD3oagCuFPwdFILhF74CMEZcUjySpbjkJ02fxeHU2rrGX8TV1lXUZKKP9tCCy%2F4Z8VHFhNnbEGpjLWWjeJBpSWoMp91rREophaBCgJYfRBg0mArEa6ufGFdOBs46EXEMzeg63k0h4DV6jxFGBhSQq3it5zhxq2muqHMp611F0ZGUqs4Y2tiE45p9noN6L7GW24RPk2N4GfUoqbtQgalg99PHdLAyucp60fLARgCEUD4Mfis%3D" alt="图片" /> Why can the file content be directly overwritten after modification?<a href="https://filestore.community.support.microsoft.com/api/images/91663a14-eb2c-4d11-a28c-99d52cd19832?upload=true&fud_access=CnUIwJNXSiBwn2bLo28mzzTBIZuA1lGXHv%2BZJGTh89V9Fw%2BmXrHowd%2BXPvBKBZaeXdNQ03fRSsMWEyNxcID2tyISBZIfl3kCZ7aQLZFzChxa6ZkAOxe9mUZ%2BBtJ8ND8W5HJeb8tXxrQVDwN8jNyzV06N%2BNMZJc0HgN7qddgW1t8gjYZbbzTbpAMdfzJVsD3oagCuFPwdFILhF74CMEZcUjySpbjkJ02fxeHU2rrGX8Q0qExPycJKcwfiuUpTA8TddtKVVYjp%2BaLcCLc%2BC4OL%2BsUUKGyrFeyh8T3N7zbH3wdXzNnqHj3wNIgkDT%2BzIRXvQdLYNqxxNn4CJsYGggczbNwfKtEWsuW5VSg2mSWxXeO1POySJLe7qpQZxuBSyZcS0MonTRWp644Xi0qMWK0aqkYVpSe4uayqGAMCckP%2BcII%3D%22filestore.community.support.microsoft.com%22" rel="ugc nofollow"><img src="https://filestore.community.support.microsoft.com/api/images/91663a14-eb2c-4d11-a28c-99d52cd19832?upload=true&fud_access=CnUIwJNXSiBwn2bLo28mzzTBIZuA1lGXHv%2BZJGTh89V9Fw%2BmXrHowd%2BXPvBKBZaeXdNQ03fRSsMWEyNxcID2tyISBZIfl3kCZ7aQLZFzChxa6ZkAOxe9mUZ%2BBtJ8ND8W5HJeb8tXxrQVDwN8jNyzV06N%2BNMZJc0HgN7qddgW1t8gjYZbbzTbpAMdfzJVsD3oagCuFPwdFILhF74CMEZcUjySpbjkJ02fxeHU2rrGX8Q0qExPycJKcwfiuUpTA8TddtKVVYjp%2BaLcCLc%2BC4OL%2BsUUKGyrFeyh8T3N7zbH3wdXzNnqHj3wNIgkDT%2BzIRXvQdLYNqxxNn4CJsYGggczbNwfKtEWsuW5VSg2mSWxXeO1POySJLe7qpQZxuBSyZcS0MonTRWp644Xi0qMWK0aqkYVpSe4uayqGAMCckP%2BcII%3D" alt="图片" /> <a href="https://filestore.community.support.microsoft.com/api/images/64a5f5c2-11b2-412e-8169-11fca621c830?upload=true&fud_access=CnUIwJNXSiBwn2bLo28mzzTBIZuA1lGXHv%2BZJGTh89V9Fw%2BmXrHowd%2BXPvBKBZaeXdNQ03fRSsMWEyNxcID2tyISBZIfl3kCZ7aQLZFzChxa6ZkAOxe9mUZ%2BBtJ8ND8W5HJeb8tXxrQVDwN8jNyzV06N%2BNMZJc0HgN7qddgW1t8gjYZbbzTbpAMdfzJVsD3oagCuFPwdFILhF74CMEZcUjySpbjkJ02fxeHU2rrGX8TNNjAgi2DBDxKwr6zkhR%2FXAQz0LzDETcl9nz7t6MjOXzHlowiSGuePdstIa7IBakx9MlJqOolJ%2FGMTODTqpRRL5ZKpbEZCUYWDbORu1OI2%2BF39e6rLfVSvlola2xzsV4bSx0zjT6x6486fjptv9LZ0M1z8WlYODVSbDDAnttX%2B2H%2F%2FrFPnRp43WYuYrLFwcy0%3D%22filestore.community.support.microsoft.com%22" rel="ugc nofollow"><img src="https://filestore.community.support.microsoft.com/api/images/64a5f5c2-11b2-412e-8169-11fca621c830?upload=true&fud_access=CnUIwJNXSiBwn2bLo28mzzTBIZuA1lGXHv%2BZJGTh89V9Fw%2BmXrHowd%2BXPvBKBZaeXdNQ03fRSsMWEyNxcID2tyISBZIfl3kCZ7aQLZFzChxa6ZkAOxe9mUZ%2BBtJ8ND8W5HJeb8tXxrQVDwN8jNyzV06N%2BNMZJc0HgN7qddgW1t8gjYZbbzTbpAMdfzJVsD3oagCuFPwdFILhF74CMEZcUjySpbjkJ02fxeHU2rrGX8TNNjAgi2DBDxKwr6zkhR%2FXAQz0LzDETcl9nz7t6MjOXzHlowiSGuePdstIa7IBakx9MlJqOolJ%2FGMTODTqpRRL5ZKpbEZCUYWDbORu1OI2%2BF39e6rLfVSvlola2xzsV4bSx0zjT6x6486fjptv9LZ0M1z8WlYODVSbDDAnttX%2B2H%2F%2FrFPnRp43WYuYrLFwcy0%3D" alt="图片" /> Discovered to have been replaced.<a href="https://filestore.community.support.microsoft.com/api/images/aad88fce-f441-4dd8-958a-26c47176e3f9?upload=true&fud_access=CnUIwJNXSiBwn2bLo28mzzTBIZuA1lGXHv%2BZJGTh89V9Fw%2BmXrHowd%2BXPvBKBZaeXdNQ03fRSsMWEyNxcID2tyISBZIfl3kCZ7aQLZFzChxa6ZkAOxe9mUZ%2BBtJ8ND8W5HJeb8tXxrQVDwN8jNyzV06N%2BNMZJc0HgN7qddgW1t8gjYZbbzTbpAMdfzJVsD3oagCuFPwdFILhF74CMEZcUjySpbjkJ02fxeHU2rrGX8SnZmOZ35Hx0%2F7sxkeBzPafui5vHRrGk%2B6xvAp4V6CjIwITuEQZc%2B5Dq7Yu5dIE2Bm5jP%2BS8A1OOYTgm0Cw%2Fc3r51nyMJ8I0widiI8byDmXJVSKBp31mx29wzk9L8yljHBj7159EQXOgA%2FwQpPyu1msgxAaAP7yAOyVAXeKpOYa%2FQmYhmSP8UMWS4bH8zpYnUA%3D%22filestore.community.support.microsoft.com%22" rel="ugc nofollow"><img src="https://filestore.community.support.microsoft.com/api/images/aad88fce-f441-4dd8-958a-26c47176e3f9?upload=true&fud_access=CnUIwJNXSiBwn2bLo28mzzTBIZuA1lGXHv%2BZJGTh89V9Fw%2BmXrHowd%2BXPvBKBZaeXdNQ03fRSsMWEyNxcID2tyISBZIfl3kCZ7aQLZFzChxa6ZkAOxe9mUZ%2BBtJ8ND8W5HJeb8tXxrQVDwN8jNyzV06N%2BNMZJc0HgN7qddgW1t8gjYZbbzTbpAMdfzJVsD3oagCuFPwdFILhF74CMEZcUjySpbjkJ02fxeHU2rrGX8SnZmOZ35Hx0%2F7sxkeBzPafui5vHRrGk%2B6xvAp4V6CjIwITuEQZc%2B5Dq7Yu5dIE2Bm5jP%2BS8A1OOYTgm0Cw%2Fc3r51nyMJ8I0widiI8byDmXJVSKBp31mx29wzk9L8yljHBj7159EQXOgA%2FwQpPyu1msgxAaAP7yAOyVAXeKpOYa%2FQmYhmSP8UMWS4bH8zpYnUA%3D" alt="图片" /> Why did such a problem arise???

Hi @ silly , Why can the file content be directly overwritten after modification? The identities of "All Users" and "Anonymous" are different. You can find out from their verification methods: "All Users" usually need to log in with their account passwords, while anonymous users do not. Therefore, the anonymous identity you use will not match the "All Users" and will not be restricted by the rule for "All Users". You need to set up rules for anonymous users to achieve this: Best regards, Xudong Peng If the answer is the right solution, please click " Accept Answer " and kindly upvote. If you have extra questions about this answer, please click "Comment". Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

IIS' FTP permission issue

Accepted answer

XuDong Peng-MSFT 10,746 Reputation points Microsoft Vendor

2024-10-21T09:46:48.24+00:00

Hi @silly,

Why can the file content be directly overwritten after modification?

The identities of "All Users" and "Anonymous" are different. You can find out from their verification methods: "All Users" usually need to log in with their account passwords, while anonymous users do not.

Therefore, the anonymous identity you use will not match the "All Users" and will not be restricted by the rule for "All Users". You need to set up rules for anonymous users to achieve this:

Best regards,

Xudong Peng

If the answer is the right solution, please click "Accept Answer" and kindly upvote. If you have extra questions about this answer, please click "Comment".

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silly 20 Reputation points

2024-10-23T09:55:14.78+00:00

Thank you！！！

silly 20 Reputation points

2024-10-23T10:04:20.4166667+00:00

If I want to allow anonymous users to upload and download, but not modify or overwrite files, how do I set it up?

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XuDong Peng-MSFT 10,746 Reputation points Microsoft Vendor

2024-10-24T06:52:24.7166667+00:00

Hi @silly,

Based on the settings above, you can try to set the file system permissions of the folder: Right-click the directory where the FTP server stores files -> Go to the Security tab -> Click Edit, then click Add -> Add the IIS_IUSRS user group -> Check Read and Write, and uncheck Modify. Please check if this work for you.

silly 20 Reputation points

2024-10-24T10:33:33.2166667+00:00

Good friend

silly 20 Reputation points

2024-10-24T10:34:00.5066667+00:00

Good friend, I have tried many times but did not select 'modify'. This only resulted in the inability to modify the name, but it is still allowed to overwrite files with the same name. If I do not give write permission, the file cannot be overwritten. However, this does not meet my requirement of allowing them to have upload and download permissions and not allowing them to modify or overwrite file data.

silly 20 Reputation points

2024-10-24T10:35:55.36+00:00

@XuDong Peng-MSFT I'm sorry to have caused you so much trouble
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IIS' FTP permission issue

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