Program crashes everytime a Mail is sent

Hello,
I’ve got a really bad problem by sending Emails.

Everytime I try to send a email - this error occurs and the program creashes. The Mail doesn’t sent.

I’d really appreciate if someone could help me!

This is a shortened form of the long error:



eM Client
8.2.1659.0

false

Microsoft Windows NT 10.0.19044.0
5.0.10
de-DE
de-DE


System.Reflection.TargetInvocationException
Exception has been thrown by the target of an invocation.
System.Private.CoreLib



System.Private.CoreLib.dll
100664620
System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e
System.RuntimeMethodHandle
InvokeMethod


System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e
System.Object
target


System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e
System.Object[]
arguments


System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e
System.Signature
sig


System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e
System.Boolean
constructor


System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e
System.Boolean
wrapExceptions



ffffffff
0



System.Private.CoreLib.dll
100682557
System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e
System.Reflection.RuntimeMethodInfo
Invoke


System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e
System.Object
obj


System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, P…

I’ve tried so far:

  • deleting account, adding new
  • uninstalling eM client / reinstall
  • tried several emails - some go out - some not