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Firefox Update Using Internal URL Fails

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Hello We have used about:config / app.update.url to change an internal webserver http://<internalserver/firefox This webserver is an IIS server with the latest Firefox EXE (<strong>Firefox_Setup_138.0.exe) on it. It has directory browsing enable and we have confirmed we can see and download the file OK. However, when we perform Help / About, you see Firefox Checking for updates... but then says Failed to check for updates. What are we doing wrong? Where can I check for errors? Thanks

Hello We have used '''about:config''' / '''app.update.url''' to change an internal webserver http://<internalserver/firefox This webserver is an IIS server with the latest Firefox EXE ('''Firefox_Setup_138.0.exe''') on it. It has directory browsing enable and we have confirmed we can see and download the file OK. However, when we perform '''Help / About''', you see Firefox''' Checking for updates...''' but then says '''Failed to check for updates'''. What are we doing wrong? Where can I check for errors? Thanks

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