@danny-dainton You were suggested as the first contact here. I am performing a fresh install of Postman. At this point I have removed the appdata and local appdata folders and any other Postman folders I found. I get the error noted above right away upon launching the installer. I have tried Run as Admin, Logged in as Admin, and non Admin, same thing. The next popup after the error has a button for a Setup log but no log ever appears. I have also run a repair on Visual C++ v14 Redistributable per another article I saw.
Appears to be specific to the Update.exe portion of the install. If I watch the Squirreltemp folder as the installer fires off, a bunch of files get created then deleted. I was fast enough to get a copy of those files and unzip the .nupkg and run Postman.exe inside of it but this is probably not the right way to do things.
It looks like the issue is with the Postman installer (Update.exe). Since you’ve tried clearing AppData and repairing VC++ redistributables, the easiest workaround is to use the portable ZIP version: download, extract, and run Postman.exe directly.
Other tips:
Temporarily disable antivirus/security software
Delete %LocalAppData%\SquirrelTemp before retrying
You can also try an older Postman version if the latest installer fails
Manually extracting .nupkg works temporarily, but the ZIP version avoids installer issues and is more stable.
@hellencharless54 I cannot disable antivirus but there are no notifications stating it stopped something. SquirrelTemp is empty, it gets a few files in it when the updater runs then empties itself again after I close out the error. And where would I get an older version?