Key takeaways
Start with the connection. An expired link between your scheduler and your account is the first thing to check.
Confirm it was really scheduled, with a date and time, and isn't sitting as a draft or waiting for approval.
Duplicates have a few known causes: a retry after a lost connection, a thread restarting, or LinkedIn's own bug when you replace media.
If a tool can't tell whether a post went out, it shouldn't send it again.
Check your queue the day before anything important goes out.
If a scheduled post didn't go out on LinkedIn or Twitter, check these in order: is your account still connected, was the post really scheduled, is there a warning on your account, did you hit a limit, is the image or link valid, and is the timezone right. If it went out twice, delete one copy quickly and find out why before you schedule another.
A post that doesn't go out is annoying. One that goes out twice in front of your whole network is worse. Here's how to work out which problem you have and fix it. We make VoiceMoat, which schedules to both networks, and we cover how it handles this near the end.
Find your problem
What you see | Likely cause | What to do |
|---|---|---|
Nothing went out, and the tool shows an error | Connection expired | Reconnect the account and reschedule |
Post is missing from the queue | It was saved as a draft, or removed | Check drafts, then the scheduled list |
Went out at the wrong hour | Timezone mismatch | Check the timezone in the tool and in your profile |
Several posts failed in a row | Limit reached or the network is down | Wait, then retry one post |
One post failed, others are fine | Bad link, or an image or file it can't use | Replace it and retry |
Same post appears twice | See the section on duplicates | Delete one copy first |
Nothing goes out when your laptop is closed | Your tool runs in the browser | Move to a tool that posts from a server |
Why LinkedIn scheduled posts fail
Your connection expired. LinkedIn access for apps generally lasts about 60 days, and many tools need you to sign in again after that. Reconnect in the tool's settings, and again after you change your password.
LinkedIn wants something from you. If your account has a security check or restriction, third-party posting can stop until you log in and clear it.
Your tool needs your computer. Tools that work through a browser extension can only post while the computer is on and you're logged in.
You can't find it. In LinkedIn's own scheduler, click the clock icon in the post box, then View all scheduled posts. LinkedIn allows a time between 10 minutes and 3 months away.
Why Twitter scheduled posts fail
You hit a rate limit. Twitter answers with an error when too many requests arrive and says when the limit resets. A good tool waits until then. A poor one keeps trying and fails.
Your tool lost Twitter. Access has become expensive, and some tools now charge extra for it or have dropped it. If every Twitter post started failing at once, check whether your plan still includes it. Our scheduler price comparison shows which ones do.
The post itself was rejected. It's too long for your account, the image can't be used, or you've posted the same text before.
If you use Twitter's own scheduler, your queue is under Unsent posts. Our guide to scheduling on Twitter has the steps.
Why posts go out twice
These are the usual causes:
A retry after a lost answer. The tool sends your post, the network publishes it, and the reply never gets back. The tool assumes it failed and sends it again. This is the most dangerous kind, because the first copy is already live.
A thread that restarts. Tweet 3 of 5 fails, and the tool starts again from tweet 1.
Replacing media on a scheduled LinkedIn post. AuthoredUp documents a LinkedIn bug where changing the image, video or document on a scheduled post creates a new copy and leaves the original in place. It happens in LinkedIn's own scheduler too.
Two tools connected to one account, both holding the same post.
If it's already happened, delete the copy with the fewer reactions or comments, right away. Then find the cause before anything else goes out, or it'll happen again tomorrow.
What a reliable scheduler should do
Ask these before you trust one with something important:
Does it record each attempt before sending? Then it knows a post was already tried.
Does it hold back when it can't be sure? A post that may be live should never be sent again automatically.
Does a failed thread continue from where it stopped?
Does it wait for the real rate-limit reset?
Does it tell you? A quiet failure is the worst kind. You want a plain message and an email.
What happens if it's hours late? Posting "Good morning" at 4pm is not a recovery.
And whatever you use, look over your queue the day before anything that matters.
How VoiceMoat handles this
VoiceMoat is an AI social media tool for LinkedIn and Twitter. We rebuilt posting around one rule: a post should never go out twice.
Every attempt is recorded before it's sent.
If the network doesn't give a clear answer, because of a timeout or a dropped connection, the post is never retried automatically.
A thread that stops continues from the next tweet and doesn't start over.
If Twitter says to slow down, the post waits for Twitter's reset time.
A post more than 3 hours late on its first try isn't sent late without asking. It's marked missed, and you choose Post now or Reschedule.
Problems land in one place: a Needs you tab on your calendar with one plain next step, and an email when a post is waiting on you.
It can't fix everything. If LinkedIn signs you out or restricts your account, you'll still need to sort that out with LinkedIn.
What each plan includes
Free | $1 trial | $5 trial | Creator | Pro | Enterprise | |
|---|---|---|---|---|---|---|
Price | $0 | $1 for 3 days | $5 for 3 days | $35 a month | $69 a month | $150 a month |
Schedule how far ahead | No scheduling | 15 days | 15 days | 7 days | 15 days | 30 days |
Scheduled posts a day | None | 4 | 4 | 3 | 4 | 5 |
Threads and media | No | No | Yes | No | Yes | Yes |
If your scheduler has let you down, try VoiceMoat: Creator is $1 for 3 days.
Frequently asked questions
Why didn't my scheduled LinkedIn post go out?
Most often the connection expired, your account has a security check to clear, or the post was never really scheduled. Reconnect, log in to LinkedIn, and check the post has a date and time.
Where do I find my scheduled LinkedIn posts?
Start a post, click the clock icon, then View all scheduled posts.
Why are my scheduled tweets not working?
Usually a rate limit, a rejected post, or a tool whose plan no longer includes Twitter. Check the error message first.
Why did my post publish twice?
A tool may have retried after losing the network's answer, a thread may have restarted, or you may have replaced the media on a scheduled LinkedIn post, which can create a copy.
What should I do with a duplicate post?
Delete the copy with less engagement straight away, then find the cause before you schedule anything else.
Does my computer need to be on for scheduled posts?
Only with tools that post through a browser extension. Tools that post from a server don't need it.
Does LinkedIn stop scheduled posts after 60 days?
App access generally lasts about 60 days, so a tool can lose its connection around then until you sign in again.
Can VoiceMoat post the same thing twice?
It's built not to. Every attempt is recorded first, and a post that may already be live is never retried automatically.
AI disclosure
This article was drafted with AI assistance and edited by Prateek Singh. Network limits and steps were read on LinkedIn's and Twitter's own pages on 9 November 2026. VoiceMoat is our product.
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