Did the upgrade to 1903 on my desktop.  After I finished...used DDU to uninstall Nvidia drivers and reinstalled 430.64 on reboot.  Also reinstalled chipset drivers.  Seemed to work pretty smoothly.  Only caviat...had to re-assign drive letters to all my USB drives and external HDD's.  Also, still no Windows control over screen brightness.  Other than that...seems OK. Will post if anything goes awry...
 
With the screen brightness issue I would be wary of upgrading a laptop.  No control over brightness on battery or power, even with 1809...so I am keeping 1803 on my MSI PE-70.  Also, 1809 caused issues with a program that I use for music scheduling for my client stations.  Can't imagine 1903 would be any better.
 
 
One more thought.  Before I did the upgrade...saved my settings for O & O Shutup Tool.  After the upgrade....all settings were wiped out.  Imported my settings...rebooted and everything is as I set it up...GREAT tool!
 
 
 

@ Bob --> So, your saying 1903 has Old chipset drivers in it ?
 
 
 
 
 
 
 
 
 
 
 
 

Yep I just moved to 1903 as well. So far so good 🤞 if there are any hitches well post here .. after sorted out.

I got different results on separate machines.....  ->  https://forums.evga.com/FindPost/2957436

Cool GTX
@ Bob --> So, your saying 1903 has Old chipset drivers in it ?
 
 
 
 
 
 
 
 
 
 
 
 

No, but I wanted to make sure that they were installed again, in case anything was over written.  No evidence that they were...but wanted to be double sure...

bobmitch

Cool GTX
@ Bob --> So, your saying 1903 has Old chipset drivers in it ?
 
 
 
 
 
 
 
 
 
 
 
 

No, but I wanted to make sure that they were installed again, in case anything was over written.  No evidence that they were...but wanted to be double sure...

You did a great job,let me know your results.

just updated to 1903 to try Xbox game pass.Had 3tb hard drive partitioned into 2 drives(NTFS) and it wiped out the second partition had to wipe drive and reformat to GPT for unallocated To be usable again. just heads up

 
A few updates:
 
 
June 11, 2019—KB4503327 (OS Build 17763.557)  https://support.microsoft.com/en-us/help/4503327/windows-10-update-kb4503327
 
Security Update for Adobe Flash Player: June 11, 2019  https://support.microsoft.com/en-us/help/4503308/security-update-for-adobe-flash-player
 
 
*KB4465065: Intel microcode updates    https://support.microsoft.com/en-us/help/4465065/kb4465065-intel-microcode-updates
 
 
 
 
*Intel recently announced that they have completed software validations and have started to release new microcode for current CPU platforms in reaction to the following threats:Spectre Variant 3a (CVE-2018-3640: "Rogue System Register Read (RSRE)")

• Spectre Variant 4 (CVE-2018-3639: "Speculative Store Bypass (SSB)")
• L1TF (CVE-2018-3620, CVE-2018-3646: "L1 Terminal Fault")This new release includes a microcode update from Intel for the following CPUs.Important Install this update for the listed processors only:    Link 
   
   
   
   
   
   
  

Thank you for all your suggestions.

I didn't had problems with 1903 update.