However, there may be times when in attempting to print to such printers, you see your print job spool to the device, but it then sits in your print queue with a small message that states something about the job being on hold with authentication required. When printing for the first time to a departmental print queue from any given computer, regardless of whether it is a departmental or personal machine, you may find that your print jobs have been paused and are listed with a message that says something like “Hold for Authentication” or “On Hold (Authentication required).” This means that you need to provide credentials to the print server before your print jobs will be allowed to be submitted. Sometimes, the authentication window will pop up by itself, but often it won't. Contents • • • • • Symptoms A message pops up when you try to print: “Hold for Authentication” or “On Hold (Authentication required).” Environment Mac or Linux Cause The print server needs your password in order to authenticate you the first time you print, and was unable to retrieve it automatically from your computer. Resolution • Open up the print queue on your computer. • Select the print job that is on hold. • Go to the Jobs menu, and choose Resume Job (on Macs) or Authenticate (on Linux). • In the dialog box that pops up, enter your UMICH credentials (username in the form 'UMROOT uniqname'). • Enable the checkbox next to Remember this password in my keychain (on Macs) or Remember password (on Linux). Additional notes If you don’t click the checkbox, the next time you submit a print job to this queue it will also be put on hold again and you will have to repeat these steps. Note that you will need to perform these steps for each and every queue that you print to for the first time. ![]() If you see this message when printing with Mobility Print This message can appear when printing from MacOS to print queues published with PaperCut Mobility Print if the user enters the wrong username or password. Pressing the refresh button gives the user a chance to reenter their credentials and, if the problem was due to an incorrect username or password, the job should go through with the correct credentials. The message can also appear if the Mobility print queue has enabled and the user has previously saved their credentials for printing in the Keychain. With credentials stored in the Keychain, the prompt for authentication won’t pop up, but if opened, the print queue window shows “Hold for authentication.” While annoying, this does prevent the more significant problem of a user accidentally saving their PaperCut credentials on a shared device. Disabling Per-Job authentication in Mobility Print prevents the above scenario, but won’t be practical if your users share devices and you want to prompt for credentials with each Mobility Print job. Alternatively, you open Keychain to delete the credentials in question, then cancel the job and retry. A rogue Mobility server The pickle in this case is that if a user has connected to a print queue from the Primary server and also somehow installed PaperCut and Mobility on their computer, then anyone in the office that sends jobs to this queue receives “Hold for Authentication” on their macOS device or incorrect name or password on their iOS device. For example, ABC Co. Has a Mobility print server that publishes printers to Alice, Bob, and Chuck. At one point, for whatever reason, Chuck installed PaperCut and Mobility on his computer and promptly forgot about it.
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March 2019
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