Update, June 6th: for those 32-bit Windows users still experiencing problems with this issue, the Lab has issued the Unloop RC viewer.
On May 31st, 2018 Linden Lab updated the Love Me Render Release Candidate, viewer version 188.8.131.525811 to de facto release status.
Unfortunately, during the release process, there was an error defining the location of the Windows 32-bit version of the Second Life viewer download. Because of this error, all Windows users downloading the viewer received the 64-bit version, regardless of which version of the operating system they are running.
While the issue has now been fixed so that 32-bit Windows users will receive the 32-bit version of the viewer, anyone running 32-bit Windows who downloaded the viewer during the 24 hours when the incorrect location was available (12:00 noon SLT on Thursday, May 31st, 2018 through 12:00 noon SLT on Friday, June 1st, 2018) may now find their system is stuck in a loop of trying to install the 64 bit version of Second Life.
Because of this, Kyle Linden issued a forum post on how to correct the problem for those caught in the loop, and I’m reproducing those instructions below for those who may have missed the forum post:
There is a way out of this loop.
Uninstall the 64 bit version of Second Life.
Install the 32 bit version from: http://download.cloud.secondlife.com/Viewer_5/Second_Life_5_1_5_515811_i686_Setup.exe
For the technically inclined there is a more surgical method to quickly recover.
Open your file explorer in Windows.
In the address bar type in %appdata% and press Enter.
Locate the SecondLife folder and open it.
Locate the downloads folder and delete it.
Launch Second Life as normal and the correct update will be applied.
Thank you for your patience and understanding, we stumbled and we’ll make corrections to our processes to ensure this doesn’t happen again.
For those needing further information, please refer to Kyle’s forum post.