Uncheck “Overwrite Existing files” in SharePoint

Uncheck “Overwrite Existing files” in SharePoint

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In SharePoint 2013 we are able to see the option “overwrite Existing files” while attaching documents in Document library. By default the option will be checked most of time by mistakenly end users will upload document with same name so that they can miss the existing document.
To avoid that we will Uncheck that option, so that if they are trying to upload the same name document it will throw error.
We implemented this functionality using JQuery and added in the master page, this will effect only in that particular site only.
Step 1:  Download the master and rename it.
In the new master page we added the JQuery JS file and script as shown below screen shot.
We already uploaded the JS file in the same site in Site Assets library. 


Step 2: Upload the new master page and select the master page for that particular site alone.

Out Put:


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5 comments:

  1. Anonymous17 September 2025 at 17:12

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    1. Anonymous20 September 2026 at 09:00

      The article explains how to uncheck the “Overwrite Existing files” option in SharePoint 2013 when users upload documents to a document library. By default, the option can remain selected, which may allow a newly uploaded document with the same name to replace the existing document. Disabling this option helps prevent accidental overwriting of existing files.

      The described solution uses jQuery and is added to the SharePoint master page so that the behavior applies throughout the particular site. The article begins by downloading and renaming the master page, then adding the required jQuery JavaScript file and script. Developers interested in learning more about JavaScript development can explore Javascript Course in India.

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    2. Anonymous20 September 2026 at 09:00

      The jQuery file is first uploaded to the Site Assets library and then referenced from the customized master page. With this approach, the SharePoint upload interface can be modified to prevent the overwrite option from remaining selected, causing an error when a user attempts to upload a document with an existing filename. Additional JavaScript learning resources are available through Javascript Training in India.

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  2. Anonymous13 February 2026 at 20:05


    Oyun oynamayı seviyorsanız, çeşitli platformlardan yeni içerikler keşfedebilirsiniz. Bu konuda güvenilir ve kullanışlı bir adres olarak https://oyun.indir.biz.tr/ size yardımcı olabilir. Hem ücretsiz hem de güncel oyunlara ulaşmak oldukça kolaydır. Dijital eğlenceyi en iyi şekilde yaşamak için bu siteyi ziyaret edebilirsiniz.

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  3. Anonymous7 September 2026 at 09:50

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