UE4 crash after open

hi guys I first time use UE but all times I open a project or create new1
UE open correct but after bettwhen 5 - 20 sec I got error …

{
LoginId:206d330d407287f42bd22a93c94b2be9
EpicAccountId:db7d81caf07b42c884f9c39b32d4af7b

You do not have any debugging symbols required to display the callstack for this crash.
}

and just close UE…
any help please ??

Thank You