What you’re seeing
- Devices in the Intune admin center show a last check-in date that is days or weeks old.
- Clicking Sync on the device or in Company Portal appears to work but nothing changes.
- New apps, policies or security settings never arrive on affected devices.
- Devices are marked noncompliant and users are blocked from email or Teams.
- Many devices stopped at around the same time, suggesting a shared cause.
Common causes
Every environment is different, but these are the causes our engineers find most often:
- The MDM certificate on the device expired or became invalid, breaking communication with Intune.
- The Apple push certificate or a connector like the Android Enterprise binding lapsed.
- A user's Intune license was removed, so the device is no longer managed under their account.
- Firewalls, proxies or web filters began blocking the Microsoft endpoints Intune needs.
- The device's scheduled sync task or management service stopped running.
- Devices were reset, retired or reimaged while their records stayed in Intune.
Why it matters
If devices stop checking in, they stop receiving security updates, new configurations and compliance checks. You lose the ability to see their real status or to wipe them reliably if they are lost or stolen. Conditional Access may start blocking staff from email and files, causing sudden lockouts. Because it often affects many devices at once, a check-in failure can turn into a company-wide problem with both security and productivity costs.
How AskTechGurus fixes it
Skip the trial and error. A certified engineer works on your actual system, finds the root cause, and fixes it properly.
Tell us what’s happening
Submit a ticket in about two minutes. Paste the error, describe what changed, and pick your tier. No charge to submit.
A certified engineer diagnoses it
A vetted, US-based systems engineer claims your ticket, usually within minutes during business hours, and investigates over a secure remote session you can watch and end at any time.
Fixed and verified with you
The engineer resolves the root cause and confirms with you that it’s working. You don’t just get a workaround, and you get a plain-English summary of what was wrong.
Pay only when it’s resolved
Fixed price from $99, invoiced only after you approve the fix. If it isn’t resolved, you don’t pay.
Frequently asked questions
Are our devices still protected?
Existing policies usually stay in place, but nothing new arrives and you cannot confirm their status. Over time that drift becomes a real security gap.
Why would many devices stop at once?
A shared dependency, such as an expired certificate, a license change or a network block, is the most likely explanation when lots of devices stop together.
Can AskTechGurus get them checking in again?
Yes. A certified US engineer investigates your tenant and affected devices through a remote secure session, starting at $99, and you pay only when devices sync again.