Problem Event Name:	APPCRASH
 Application Name:	thunderbird.exe
 Application Version:	52.3.0.6436
 Application Timestamp:	5992dd3a
 Fault Module Name:	ntdll.dll
 Fault Module Version:	6.1.7601.23864
 Fault Module Timestamp:	595fa490
 Exception Code:	c0000005
 Exception Offset:	0002e0e6
 OS Version:	6.1.7601.2.1.0.768.3
 Locale ID:	1033
 Additional Information 1:	556f
 Additional Information 2:	556f8f908d61240389114eeb13401582
 Additional Information 3:	8357
 Additional Information 4:	8357aa5c8bc869eb9696cf7ca9e1be5f

It used to work but suddenly works no more after a few days. Upon starting the application immediately there's a message "thunderbird has stopped working". The options are close the program or check for a solution first. The "view problem details" shows the following: === Problem signature: Problem Event Name: APPCRASH Application Name: thunderbird.exe Application Version: 52.3.0.6436 Application Timestamp: 5992dd3a Fault Module Name: ntdll.dll Fault Module Version: 6.1.7601.23864 Fault Module Timestamp: 595fa490 Exception Code: c0000005 Exception Offset: 0002e0e6 OS Version: 6.1.7601.2.1.0.768.3 Locale ID: 1033 Additional Information 1: 556f Additional Information 2: 556f8f908d61240389114eeb13401582 Additional Information 3: 8357 Additional Information 4: 8357aa5c8bc869eb9696cf7ca9e1be5f === I have uninstalled and reinstalled a few times, doesn't make any difference. Please help? Thanks