Troubleshooting faded-looking icons in Managed Software Center on 10.13 clients

Update: Apparently, a real fix for this is on the way.

Acknowledgements: thanks to elios and bochoven on MacAdmins Slack for figuring out what was going on.

If the icons in your Munki repo looked fine on your 10.12 and 10.11 clients, and then a few of them suddenly look sort of faded (for example, Word and Excel in this screenshot) in 10.13 clients, it's apparently because of a change in the way 10.13's Safari webkit displays .png files missing the ColorSync profile in the Get Info context menu (you'll still see the ColorSync profile if you open the .png with the ColorSync Utility).

The simple fix is to do the following:

  1. Mount the Munki repo share using a Mac running macOS 10.13.
  2. Delete the offending icons from /PATH/TO/MUNKI/REPO/icons/
  3. Regenerate new icons with
    /usr/local/munki/iconimporter /PATH/TO/MUNKI/REPO

Note: Icons generated using MunkiAdmin or sips will be fine, too, even if generated using a machine running macOS 10.12.

LockDown Browser in iOS crashes immediately after launch

If LockDown Browser on your iPad opens and immediately crashes, the way to fix it is to uninstall and reinstall the app. Swiping away the app, updating the app, updating iOS, doing a home-power reset all do not fix this issue (at least not at the time of this writing).

Importing custom .mobileconfig profiles into Mosyle MDM

Acknowledgements: Full credit to Tom Case on the MacAdmins Slack for this tip.

It's not immediately obvious that you can import custom .mobileconfig profiles into Mosyle MDM, but apparently you can if you go to Management > Certificates > (click on profile or add new one) > Select the file.

Those can be any .mobileconfig files—they do not have to be actual certificates.

Printopia Pro and “login not accepted” message

If you use pycreateuserpkg to create a user or change its password, that will work great... except with Printopia Pro, which will prompt for a local admin username and password, and your local admin username and password will not work, and you'll get a login not accepted error message instead.

Deleting and re-adding the local admin account using the GUI (System Preferences > Users & Groups). You'll have to use the terminal to delete the user and then re-add (through the GUI is fine for this second part).

Then Printopia Pro will launch up just fine and not prompt you for a username or password.

Escaping an apostrophe on a PowerSchool custom page variable

Acknowledgements: Thanks to Roger Sprik on the PowerSchool forums for this tip.

I have a custom page that uses the last name field:

The only problem with that is if the last name has an apostrophe in it, that can lead to unexpected stuff when used in jQuery.

Apparently, you can strip out the variable to show only the letters and numbers:


Chrome Gmail unread messages not appearing in bold

We had a user whose unread emails were appearing as bold in Safari (with an ugly font) and not bold at all in Chrome (font looked okay), and we did some digging and found the solution was to enable the Arial Bold font in Font Book on the user's Mac, and it was all good.

Our best guess is that Safari couldn't find the font it wanted so substituted an ugly font but kept it bold, and Chrome couldn't find the font it wanted so substituted a decent-looking font but not bold.

When you can’t draw, erase, or highlight in Notability on iOS

A user wasn't able to draw (with a finger) using the pen tool in Notability. Highlighting and erasing were also not working (just seemed to move the note about in Notability).

We worked with the user on the usual troubleshooting steps (kill the app, do the home–power button reset, make sure iOS and Notability are both updated) to no avail.

The solution that ended up working—double-checking the notes were all backed up, and the uninstalling the app... and reinstalling the app.

Fix for Google Sheets error message: “Can’t save your changes. Copy any recent changes, then revert to an earlier revision”

If you come across a message that Google Sheets can't save your sheets and you need to revert to an earlier version, but even the earlier version can't save, don't bother doing any of these suggested steps. Clearing cookies won't help. Disabling extensions won't help.

Instead, try this (as counterintuitive as it seems): copy and paste your Google Sheets cells into a new Excel workbook. Save the Excel workbook and upload it to Google Drive. Open it with Google Sheets. Save that sheet. Delete your old, non-working sheet.

macOS command to add back Wi-Fi service

Acknowledgements: Hat tip to Eric Hemmeter on the MacAdmins Slack for this command.

If you want a command that will add back the Wi-Fi service if you deleted it and now want it back, here it is:

networksetup -createnetworkservice Wi-Fi en1
That's assuming the output of
networksetup -listallhardwareports
has a hardware port of Wi-Fi with its device being en1 (could be en0, for example).

Using Munki to manage Mac preferences with .mobileconfig profiles

You may sometimes script preferences using defaults write commands (don't edit the .plist files with a text editor directly). For example, you might change Munki client preferences using a command like:

sudo defaults write /Library/Preferences/ManagedInstalls SoftwareRepoURL ""
That's fine to do, but if you're actually managing Munki client preferences (not just for Munki-related settings but for other third-party or macOS settings), why not use Munki's built-in support for .mobileconfig profiles?

There are several methods to get or generate .mobileconfig profiles. I'm listing them below in order of preference from top recs to not-to-top recs.

Just finding existing profiles

Chances are if you want to manage a setting, someone else has also wanted at some point to manage that setting. mobileconfig is a great Google search for finding those.

Using mcxToProfile to generate a profile

You can create .mobileconfig profiles from existing .plist preference files you already have on a sample client machine. Just download Tim Sutton's mcxToProfile.

Then you can run something like

./mcxToProfile --plist /Library/Preferences/ManagedInstalls.plist --identifier MunkiPrefs
and then you can hand-edit the resulting .mobileconfig file to get out anything extraneous (for example, if all you want to set is the SoftwareRepoURL).

Generating Profiles with Apple Configurator

Apple Configurator is another option.

Just click File and select New Profile.

Once you've selected everything you want to configure, click Save.

The code it produces is (like mcxToProfile's) clean and easy to edit. And, yes, you usually want to edit down .mobileconfig profiles to be only the things you actually want to manage. Omit (i.e., delete) anything that you want your users to be able to manage themselves.

Generating profiles with Profile Manager

If you're using, there's a built-in way to generate profiles.

I usually create a test device group with no actual devices in it.

Then, under Settings, select Edit.

Find the type of setting you want to edit (there are some generic settings and then others specific to iOS or macOS). and click Configure and check off all the stuff you want configured.

Then once you've closed out of the editing settings space, click Save for the whole device group. This will allow you to download the settings.

Click the Download button and select macOS.

Now we're getting to why I seldom use Profile Manager. It adds in a bunch of binary gobbledygook and shoves all of the tags together so it's not easy to read. So, yeah, you can use it... but not fun.

Update: Apparently, you can tidy up the XML fairly easily if you want. Thanks to Ian Vonesh for the tip.

Whichever method you use, though, you can just import the .mobileconfig directly into Munki and push it out to your clients (be sure to test for unexpected behavior first before moving to production).