Pyrogram bot missing messages from certain Telegram channels

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1

Issue with message reception in my Telegram bot

I have a Telegram bot created with Python using the pyrogram library. Everything was working fine at first and the bot was getting all messages from every channel I subscribed to. But now I’m facing these issues:

• Some channels don’t send any messages to my bot anymore
• Other channels only send partial messages (missing some posts)

Here’s my current code setup:

from pyrogram import Client, filters

API_ID = 12345
API_HASH = "your_api_hash_here"
BOT_TOKEN = "your_bot_token_here"
BOT_SESSION = "my_telegram_bot"

app = Client(BOT_SESSION, api_id=API_ID, api_hash=API_HASH)

@app.on_message(filters.channel)
async def handle_channel_messages(client, msg):
    print(msg.text)

app.run()

What I want to achieve:
• Get every single message from all the channels I’m subscribed to
• Make sure no messages are skipped or lost

Has anyone experienced similar problems with pyrogram? Any suggestions on how to fix this?

2

Classic pyrogram session corruption - dealt with this exact thing last year. When bots randomly miss messages from certain channels, it’s usually because the session state got corrupted during network drops or bad shutdowns. Delete your session file completely and rebuild it from scratch. Also check your message handler’s exception handling - unhandled errors make pyrogram silently drop messages. I saw huge improvements after adding proper error handling and graceful shutdowns. That partial message issue? Definitely session desync.

3

check if those channels switched to restricted mode or banned bots completely. happens a lot lately. your session might be getting rate limited too - try making a fresh session file and see if that fixes it. old sessions sometimes get flagged by telegram’s servers.

4

Had this exact issue six months ago. It’s usually bot permissions, not your pyrogram code. Make sure your bot has admin rights or at least read permissions on each channel. Channel admins love revoking bot access without warning, or they’ll change settings that block bots. Telegram’s flood limits are another killer - hit too many channels at once and you’re temporarily banned. I fixed it by adding message queues and delays between requests. Also check if you’re running multiple instances with the same session - that causes delivery conflicts.