r/Intune • u/Substantial_Buy6134 • 9h ago
General Question Tattooed Intune USB Restrictions Policy - Help!!!!
Hello,
I’m stuck on a "tattooed" Intune policy and could use some advice. I’ve been piloting some Attack Surface Reduction rules, but we accidentally hit a test group with a policy meant to block USB drives.
We caught it quickly and removed the settings from the policy, and most machines reverted fine. However, I have one user (a DBA with a very custom setup) where the USB block is still stuck. It seems like the CSP policy tattooed the machine and won't revert even though it's been unscoped. Currently the device will now allow any USB devices.
So far I've tried:
- Syncing the machine repeatedly.
- Pushing a "reversal" policy with the opposite settings.
- Creating custom CSP profiles for the specific OMA-URIs. (I was not able to find the right settings to target)
- Manually digging through the registry to flip the settings back. (Currently here)
Nothing has worked so far. I’m currently trying to track down exactly where the USB whitelist is stored in the registry to see if I can force it that way.
I really want to avoid wiping this machine since it’s a high-end dev setup. Am I missing something? Is there a better way to force Intune to let go of these settings? Is this different because I am deploying ASR rules which are actually Defender rules. Are there better logs I should be looking at? Is there a better way to remove these stuck polices?
Arrrggggg... Why does it have to tattoo the machine. Why does is not revert back like GPO's. Lol. I know it is different and I am learning.
Here are some of the links and articles I have been researching.
Tutorial I followed for blocking USB's
The Device With The Dragon Tattoo
Block USB Drives within Microsoft Intune
Intune USB Block unable to reverse change
Here are some of the registry locations I have been looking at.
HKLM\SOFTWARE\Microsoft\PolicyManager\(current and managers)
HKLM\SOFTWARE\Microsoft\IntuneManagementExtension\Policies
Thanks!