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Editorial Team
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Asked: 2026-06-06T15:41:55+00:00

I have a text file that contains cached data in JSON format. I’m trying

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I have a text file that contains cached data in JSON format. I’m trying to update the file, but my IIS worker process is locking the file and when I try to write to it, I get the error “The Process Cannot Access The File Because It Is Being Used By Another Process”. I’ve searched for answers on Google and Stack, but I can’t seem to find anything related to IIS locking a file. The text file is included in my Visual Studio solution and I am using IIS on my local machine to host my website. For my first question, I’m wondering how I can get IIS to release the file or not lock it at all. For second question, I’m wondering if there’s a different approach to prevent IIS from locking my files.

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1 Answer

  1. Editorial Team

    After taking a lunch break, I realized that the worker process was hanging on to the text file because it was reading a line from it and then attempted to write to it. I wrapped the file in a using statement and moved the write after the read and now it’s working.

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