How to fix “Flashing Tiles” issue in Canvas on a PC
Canvas seems to work best in Chrome or Firefox but sometimes if you get the “flashing” issue, it might mean you need to clear your internet cache memory. This is done by doing a force refresh by pressing both CRTL and F5 buttons simultaneously on your keyboard (Mac: Apple + R or command + R) depending on your browser. Sometimes a simple force cache refresh won’t work and you need to clear the cache by hand.
Internet Explorer
1. In the Internet Explorer menu bar, click the Tools icon.
2. Select the Internet Options link.
3. In the General tab, under the Browsing history heading, click the Delete button.
4. Check the Temporary Internet files and website files and Cookies and website data checkboxes.
Remove the check for the Preserve Favorites website data checkbox.
5. Click the Delete button.
Edge
1. In the Edge menu bar, click the Hub icon.
2. To view your browsing history, click the History icon.
3. Click the Clear all history link.
4. Choose the types of data or files you want to remove. Select the Cookies and saved website
data and Cached data and files checkboxes.
5. Click the Clear button.
Chrome
1. In the Chrome browser toolbar, click the Chrome menu icon.
2. Click the More Tools link.
3. Click the Clear browsing data link.
4. Use the drop-down menu to select the time range from which you want to clear browsing data.
5. Clear browsing data by selecting checkboxes. Select the Cookies and other site data and Cached images
and files checkboxes.
6. Click the Clear Browsing Data button.
Firefox
1. In the Firefox menu bar, click the Firefox option.
2. Select the Preferences link.
3. Click the Privacy tab.
4. Under the History heading, click the clear your recent history link.
5. Select the Cache checkbox.
6. Click the Clear Now button.