Problems moving data from W7 to W10

I'm moving my wife's data from her W7 laptop to a W10 laptop (W10 home 1903, build 18362.836) and I'm hitting problems. I've transferred her data fine but: 1. I cannot access her thunderbird profile which is at users/../.../roaming/Thunderbird/profiles/...... I get access denied. How do I gain access? 2. Similar thing with another program where I am told the User access control has blocked my access to this program for my protection. How do I gain access from UAC? Thank you.

Thank you for taking the time to reply. It's all my fault. I made a backup of the Windows 7 C drive using Macrium and was "exploring" that Macrium backup out of convenience. That's my problem. In the backup I was not allowed to access that file (something about permissions). But on the original W7 laptop I had no trouble accessing the profile folders and copying them to a flashdrive. So my problem is solved and was all of my own making. Macrium may have even permitted me to "restore" the backed up folder to the W10 laptop but I did not want to try that because of possible location or other problems between the 2 different OSs. The UAC problem persists. How do I get UAC to allow this old program to be accessed under W10? The program is "Classic Shell" which my wife likes. It replaces the regular Windows menu. In the W10 laptop, after booting I get a popup that says "Classic Shell needs to configure itself for the new operating system". When I click OK, a User Access Control popup appears that reads something like "This app has been blocked for your protection" etc. I close this popup because there is nothing else I can do and Classic Shell seems to work just fine. But I would like to resolve this because it would freak my wife who is technophobic. PS. All my line breaks disappear on this forum. Makes my replies hard to read. How do I keep line breaks? I tried inserting and that displays correctly on the "preview" but not when it is submitted. Javascript? How do I correct this? It is only on this webforum.

Curious said:

... It's all my fault. I made a backup of the Windows 7 C drive using Macrium and was "exploring" that Macrium backup out of convenience. That's my problem. In the backup I was not allowed to access that file (something about permissions).....

When mounting a Macrium image there's a box you can tick to 'Enable access to restricted folders'. By default it's not ticked, so the permissions within the image apply. Tick it to bypass all the ntfs permissions in the image.

Bree said:

When mounting a Macrium image there's a box you can tick to 'Enable access to restricted folders'. By default it's not ticked, so the permissions within the image apply. Tick it to bypass all the ntfs permissions in the image.

Thanks. I did not notice that. Good to know.

There are still free options to upgrade the Windows 7 to Windows 10 for free in case it's needed:

Windows 10 - Test & Try with No Risk, No Install - Windows 7 Help Forums
Upgrade to Windows 10 from Windows 7 for Free
Clean Install Windows 10 Directly without having to Upgrade First

Macboatmaster said:

I do not recommend you use classic shell on the latest version or indeed the one before on windows 10 I have read of a few problems with it However if your wife really insists on using it I suspect the causer may be as mentioned on my first reply Possible cause on 10 is your Anti-Virus - if it is not Defender what is it please PLUS and more importantly perhaps if it this classic shell Classic Shell - Start menu and other Windows enhancements I certainly would urge you NOT to use it, a program such as that, is a security risk. The app is not being developed and therefore MAY possibly prove a weak point as far as security.

Thank you for your advice about Classic Shell. The version she uses is a very old one (4.3.1) and you now have me concerned because I too use Classic Shell. Is this "general advice" to not use any program that are no longer developped (which I understand) or specifically about Classic Shell? Should she switch to the latest developped version "Open Shell" under development on github? Do others agree that Classic Shell is a significant risk? The Antivirus she uses is Microsoft's Defender.