Hello,
Try to download the autoupdater and extract it in your client folder of InfinityMU and run AutoUpdate.EXE
Download the updater here:
https://mega.nz/file/SpkEzTyD#KSndYu0I1yFgwpBdm9iZ115ma-8JvVBeYWp8tHKrS1I
If you have antivirus program make sure you added the InfinityMU client folder to the exceptions list.
More possible solutions on your problem is like downloading the latest .NET Framework driver, read more here:
https://wiki.infinitymu.net/index.php?title=Game_Client_Issues
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Avast / Avira Antivirus Troubleshooting
(!) In case you are using Avast or Avira antivirus please make sure you have added the InfinityMU client folder into the Exceptions list of your antivirus software (Avast / Avira).
Should you require further assistance please do not hesitate to contact us at:
support@infinitymu.net or
Submit a Ticket via website. We will help you with remote assistance if necessary.
Discord support: VENCi#3206