For the past 10 days I have been unable to use Quicken on my Windows computers - both are running Win 11 Ver 23H2; all I get is the white screen which has many closed postings in this forum. The Q file version on my computers is 27.1.62.16. I have already read all the previous postings on this white screen problem but none of the answers can get Q working again for me. I have also spent many hours speaking with Support but they have not yet been able to fix the problem either. I can view Q on the Web (Online) but can make no entries, nor see any transactions there. I have been using Q Canada for over 20 years and have never experienced this problem before. My guess is that the problem is a type of 'validation' issue as when I attempt to start Q on each computer I momentarily see my data file displayed but within a second that is replaced by the white screen and NEVER do I see a window asking me to sign in. I am now at my wits' end and am very much in need of assistance. Thank you!