So I am in the process of moving our file server to Server 2019. In doing this, the group policy objects have seemingly broken. We have 10 network shares that map into drives (all different letters) but for some reason out of 10 identical (aside from share name) only 4 drives actually apply and show on file explorer. Does anyone have any clue what is freaking it out so bizarrely?

6 Spice ups

How did you accomplish drive mappings? Using GPP GPO? If yes, what options did you choose? REPLACE?

All of the drives are mapped using the User Preference Drive Map option. They are all setup with update, reconnect, use “*:” drive letter, and apply in the user’s security context (I have tried this toggle off and there’s no change)

Open up Group Policy Management > Go to Group Policy Results > Right-click and run the wizard. Choose a test PC and then user. Check out the results of this scan and see if you’re getting any tangible errors in there.

Are you
Using security filtering?
Item level targeting?
All in on GPO or separate?
Can you post what is working vs what isnt? Settings wise?

The drives are all on their own policy. As of right now they are being filtered by security objects (also tried item level to no success). The first 2 are from a non functional GPO and the second 2 are from one of the ones that maps

Not1_LI.jpgnot2.pngWorks1_LI.jpgWorks2.png

You using security filtering on the GPOs non-working drives?
Did you give authenticated Users a read delegation? For more info on that Look up MS16-072

I ended up making new GP Objects and the new drives showed up.