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Inspiring
May 18, 2026
Answered

Unable to create or edit Scheduled Tasks in CFAdmin

  • May 18, 2026
  • 2 replies
  • 83 views

A recent update has broken Scheduled Tasks for us.  The small Pause, Resume and Play icons work but we are not able to create a new Scheduled Task or Edit an existing one.  We have CF 2023.0.19.330899 on both local and live servers and does this on both.  It also does this on CF  11,0,19,314546.   Whenever a new task schedule is attempted, or edit an existing one, after hitting the “Submit” button on the form, the browser says “Server sent back an empty page”.  I have tried in different browsers and it gives same results.  Can you help?

    Correct answer DevScreen

    ​@Charlie Arehart: This problem is resolved, and I want to thank you for all your help. Once I had something to go by (NS_ERROR_NET_RESET), I started researching and all signs pointed towards firewall/security software. I got the right person to look into it and they saw that scheduleedit.cfm was indeed being blocked.  They unblocked it and it’s finally working again.  I was under the impression that a recent security update broke it, but it’s actually a recent update to the firewall/security software that had broken it!  Thanks again for your help and pointing in the right direction.

    2 replies

    Charlie Arehart
    Community Expert
    Charlie ArehartCommunity Expert
    Community Expert
    May 19, 2026

    I’m going to create a new thread, since my previous one has diverged into other ideas from BKBK (and you and he may well reply further to those).
     

    Since you say you see no error logged (which is odd), let’s pursue a different tack.
     

    1) First, can you clarify that you have only one instance of each given CF version installed, rather than “multiple instances” (a feature of CF Enterprise, not available with Standard, but also available in Trial or Dev editions). I ask because if you ARE using multiple instances, then we would want to make sure you are looking at the logs for the instance whose admin you are using.
     

    When you’re in the CF Admin, look in the top right under the icons. Does it indicate “cfusion” or any other name? If it was another name, like “myinstance”, then you would look for a folder like /coldfusion2023/myinstance/logs, rather than cfusion/logs. Any different info, if that’s so?
     

    2) Next, and especially if there really are no error logs, let’s switch gears and have you use the browser developer tools. Regardless of browser, each has a dev tools feature (available in its menu), and each has a “network” tab, where you can watch the back and forth between your browser and server for a given request. As you may know, you will see ALL the files requested from the browser (which could include js, css, image files, and more), as well as their status code.
     

    Are all requests returning with 200, when you submit the form? You can sort the list of requests by status code, to see more readily. And then if you mouse over the request you can see the full URL (and you can right-click to copy the url of such a given request). Tell us the URL if any fail.
     

    Then you can left-click on the request to see more details, like the response. It may say something useful. If so, let us know.
     

    3) Did you by any chance at least try “clearing the felix-cache”, as I alluded to in my first reply, at least for the CF2023 instance? Again, if you may run multiple instances then you need to do that in the INSTANCE’s folder.
     

    4) Finally, let’s not forget that you say the problem happens with CF11 as well as CF2023. As I said in my first reply, only since CF2021 have we needed to do that clearing of the felix-cache, and it’s because only since that version has CF broken its features into “packages”. that means the CFPM approach BKBK suggested also won’t apply to CF11, of course.
     

    But for now, I suspect you’ll be happy if you could get at least one of them working, and my new suggestions here do apply to “both” of those, so let us know what you find.

    /Charlie (troubleshooter, carehart. org)
    DevScreen
    DevScreenAuthor
    Inspiring
    May 19, 2026

    Hi Charlie,

    Thanks for the reply. 

    1. We only have one instance running, upon logging into CFAdmin, I see “cfusion” in the top-right corner.  I did check the logs yesterday and they didn’t show anything.
    2. I pretty much mostly checked the developer “Console” tab till now, but I think looking at the “Network” tab may have just dropped a clue!  As I hit the submit button, I saw a “red” POST record, with one column saying “NS_ERROR_NET_RESET”.  I am not yet exactly sure what that means, but at least it’s something instead of just a blank screen.  I have attached a screenshot incase it helps.  I wonder if something within our network is blocking the POST request.  But adding a new Datasource (which also uses form based input) is working perfectly fine, which I believe is also a POST request.
    3. I got the felix-cache folder cleared, but that didnt’ help. 

    I will continue looking into NS_ERROR_NET_RESET to see what it is, and what could be causing it. Thanks again for your help.

    Charlie Arehart
    Community Expert
    Charlie ArehartCommunity Expert
    Community Expert
    May 18, 2026

    I'm not aware of a known issue of that sort. Often, with CF2021 and above, if something failed after an update we'd suggest you "clear your felix-cache" (stop cf and delete that folder under cfusion/bin). But since you say this happens on cf11 that solution would not apply.

     

    Have you confirmed the problem happens in an incognito window (or new private window) in your browser?

     

    Have you looked at the logs in the cfusion/logs folder? Don't trust the date modified. Right after getting the error, look at the very bottom of the application, coldfusion-out, coldfusion-error,  and exception log files. Any error message?

     

    If you remain stumped, I'm confident I could help you solve this, in a remote screenshare consulting session. We might even get done in less than 15 minutes (my minimum interval). That's not a promise or estimate, as we won't know what's at issue until we dig in. But we'd be working together, and you won't pay for time you don't find valuable. Hard to find a better offer than that. For more on my rates, approach, satisfaction guarantee, online calendar, email, phone, and more, see the consulting page at carehart.org.

     

    Let us know how it goes. Or maybe someone else will have other ideas. 

    /Charlie (troubleshooter, carehart. org)
    DevScreen
    DevScreenAuthor
    Inspiring
    May 18, 2026

    Thanks for your reply Charlie.  I had already tried the private tab, and that didn’t help.  Just for the sake of trying, I even downloaded a CORS plugin for Firefox which disables any CORS issues but that didn’t help (removed the extention afterwards).  I just tried it again and as soon as I got the empty response, I checked the log files you mentioned and didn’t see anything stand out.  I do want to mention that in order to schedule task or edit, we now have to RDP (Remote Desktop) into the server itself, then use http://localhost:port/CFIDE/administrator. Other developers trying to scheduled task from their own machines have the same issue, and they have to use RDP instead.

    I appreciate your help.  I will pass on your consulting info to my manager and have him decide upon that.  Thank you!

    BKBK
    Community Expert
    BKBKCommunity Expert
    Community Expert
    May 19, 2026

    Hi ​@DevScreen ,

    If, as you say, the problem started happening after you applied a recent update, then the update might be the cause. Recent updates, such as Update 19 of ColdFusion 2023, involve changes to administrator-related packages. Namely, the packages, administrator, adminapi and ccs.

     

    Perhaps something went wrong when these packages were updated. Hence my suggestion that you uninstall, then re-install, each of those three packages.

     

    To do so, you could proceed as follows (I am on Windows; use the equivalent instructions for your Operating System):

    1. Open the Command Prompt (cmd) as Administrator;
    2. Use the DOS cd command to navigate to  {CF2023_INSTANCE_DIR}/bin;
    3. Type cfpm and press ENTER. You should get ColdFusion's package manager prompt cfpm;

       

    4. Run the command uninstall administrator
    5. A restart is required for the administrator package to be uninstalled.
      So, leaving the CMD window open, restart the ColdFusion instance.
    6. Run the command uninstall adminapi
      followed by the command uninstall ccs
    7. A restart is required for the adminapi package to be uninstalled.
      So, leaving the CMD window open, restart the ColdFusion instance.
    8. Run the command install ccs
      followed by the command install administrator
      (the second command should install both the administrator and adminapi packages).
    9. Run the command quit 
      to leave the CFPM tool. Then close the CMD window.
    10. Restart the ColdFusion instance, open the ColdFusion Administrator and test by editing a scheduled task..
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