I'm tasked with implementing BitLocker with a PIN, but it feels like a daunting challenge. Here's the situation: whenever a system reboots—especially after patches—every device needs to be manually unlocked for booting. We use WSUS, but it doesn't automatically pause enforcement during patching, which complicates things further.
To reduce the frequency of unlocks, I created a script that should run upon shutdown, checking for reboot events and suspending BitLocker to bypass the PIN requirement. However, this doesn't work reliably, and I can't pinpoint why.
Also, when I assign a single PIN to multiple users, they tend to forget it. On the flip side, letting users set their own PINs leads to them forgetting those as well, mainly because the PIN rules prevent sequential or repeated numbers, which contrasts with their usual PINs.
I can't find a solution to avoid the BitLocker PIN prompt during updates, and regardless of whether PINs are set by me or the users, they forget them. Any ideas on how to manage this without causing a significant impact?
We do use Microsoft Endpoint Configuration Manager (MECM), which could handle suspending BitLocker during patches, but setting that up is something I'd prefer to avoid if feasible. I won't be able to respond immediately, so bear with me on the replies!
4 Answers
We use a pre-boot PIN for our laptops with MECM set up as well. You just need to assign a BitLocker policy to collections, and it should take care of the setup. The MECM environment also includes user and helpdesk portals for BitLocker recovery, so users can manage their own keys if needed. We had to shift to Windows Update for Business to smooth out the update process; sometimes bad updates cause BitLocker to go into recovery, but this isn’t something MECM can control.
On a different note, I'm curious—did anyone actually mandate the use of the pre-boot PIN, or was it just enabled without explanation? For many organizations, TPM-only BitLocker can still protect against offline theft, which is a primary concern. If it's mainly a compliance thing, MECM has built-in features for suspending BitLocker before patches, so you might want to explore that route further.
BitLocker with a pre-boot PIN can definitely be a hassle, especially during patch cycles. What we did was use the BitLocker suspend feature ahead of maintenance windows. That way, machines can reboot without requiring a PIN, and you can automatically re-enable protection afterward. If you're already using MECM, this can be set up to run automatically, which should save you some headaches. Alternatively, you might consider using TPM with BitLocker without a PIN if regulatory compliance doesn’t strictly require it; this can simplify things a lot.
Have you looked into the "Network Unlock" option? It might work in your environment, though it could conflict with certain security guidelines. It’s frustrating dealing with these compliance requirements, but often there’s a reason behind the PIN mandate. Just be prepared for some pushback if you raise concerns about patching issues. Training and awareness among your users can also help a lot; if you’ve got a large team, getting them on board with a consistent PIN strategy is key.
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