If you are currently experiencing anError On Post issuewhen trying to launchEscape From Tarkov, you are not alone. Many users are encountering problems with the Error On Post issue because of a recent update and thousands of players trying to log on simultaneously. Because of this, there is not much you can do to fix the error beyondwaitingfor the servers tocalm down. In short, the servers areoverloaded, as confirmed by a moderator on theEscape From Tarkov forum.
To recap, the main thing you need to do to fix the Error On Post issue is to wait for the servers to calm down. But if you still encounter the error even after waiting, we recommend trying a few troubleshooting steps to help fix the Error On Post issue. The first fix we recommend trying isrestarting the game, then restarting yourPCif restarting the game doesn’t work.

After restarting your PC, we recommend trying to restart your router by pulling the wires out of the back for30 seconds. When 30 seconds have passed, plug the wires back into your router and see if you can launch Escape From Tarkov.
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How to check if Escape From Tarkov is down
If you want to check if the Escape From Tarkov servers is down, we recommend checking eitherDown Detectoror the officialTwitter for the game. Both sources can help you make an informed decision whether or not the servers are experiencing server issues.
for more on Escape From Tarkov, we at Pro Game Guides have you covered with guides likeBest Loadouts in Escape from TarkovandEscape From Tarkov: How to Breach Doors.